View source for USS Helena (CL-50)

{{Short description|United States Navy WWII-era light cruiser}}
{{other ships|USS Helena}}
{{good article}}
{{Use shortened footnotes|date=October 2022}}
{{Use American English|date=September 2015}}
{{Use dmy dates|date=June 2018}}
{|{{Infobox ship begin}}
{{Infobox ship image
| Ship image = File:USS Helena NH 95812.jpg
| Ship caption = USS ''Helena'' in 1940
}}
{{Infobox ship career
| Ship country = United States
| Ship flag = {{USN flag|1943}}
| Ship name = ''Helena''
| Ship namesake = City of [[Helena, Montana]]
| Ship builder = [[New York Naval Shipyard]], [[Brooklyn, New York]]
| Ship original cost = 
| Ship laid down = 9 December 1936
| Ship launched = 28 August 1938
| Ship commissioned = 18 September 1939
| Ship fate = Sunk, [[Battle of Kula Gulf]], 6 July 1943
}}
{{Infobox ship characteristics
| Hide header = 
| Header caption = (As built)
| Ship class = {{sclass|Brooklyn|cruiser|0}} [[light cruiser]]
| Ship displacement = *[[standard displacement|Standard]]: {{convert|10,000|LT|t|0|lk=on}}
*[[Full-load displacement|Full load]]: {{convert|13,327|LT|t|0}}
| Ship length = {{cvt|608|ft|8|in}}
| Ship beam = {{cvt|61|ft|5|in}}
| Ship draft = *{{cvt|19|ft|10|in}} (mean)
*{{cvt|24|ft}} (max)
| Ship depth = 
| Ship decks = 
| Ship power = *8 × [[Steam boiler]]s 
*{{cvt|100,000|shp|kW|lk=on}}
| Ship propulsion = *4 × [[Steam turbine#Marine propulsion|geared turbines]]
*4 × [[Propeller|screws]]
| Ship speed = {{cvt|32.5|kn|lk=in}}
| Ship range = 
| Ship complement = 888 officers and enlisted men
| Ship armament = *15 × [[6"/47 caliber Mark 16 gun|{{convert|6|in|mm|abbr=on|0}}/47 caliber]] Mark 16 guns
*8 × [[5"/38 caliber gun|{{convert|5|in|mm|abbr=on|0}}/38 caliber]] [[Dual-purpose gun|dual-purpose]] guns
*8 × [[M2 Browning|caliber {{convert|0.50|in|mm|abbr=on|1}}]] [[Heavy machine gun|machine guns]]
| Ship armor = *[[Armor belt|Belt]]: {{convert|3+1/4|-|5|in|mm|abbr=on}}
*[[Deck (ship)|Deck]]: {{convert|2|in|mm|abbr=on}}
*[[Barbette]]s: {{convert|6|in|mm|abbr=on}}
*[[Gun turret|Turret]]s: {{convert|1+1/4|-|6|in|mm|abbr=on}}
*[[Conning tower|Conning Tower]]: {{convert|2+1/4|-|5|in|mm|abbr=on}}
| Ship aircraft = 4 × [[Curtiss SOC Seagull|SOC Seagull]] [[floatplane]]s
| Ship aircraft facilities = 2 × [[stern]] [[Aircraft catapult|catapults]]
| Ship notes = 
}}
{{Infobox ship characteristics
| Hide header = 
| Header caption = (1942 refit)
| Ship armament = *15 × 6-inch/47 caliber Mark 16 guns
*8 × 5-inch/38 caliber anti-aircraft (AA) guns
*16 × [[Bofors 40 mm Automatic Gun L/60|{{cvt|40|mm}} Bofors]] anti-aircraft guns
*12 × [[Oerlikon 20 mm cannon|{{cvt|20|mm}} Oerlikon]] anti-aircraft cannon
| Ship sensors = *SG [[surface search radar]]
*SC [[air search radar]]
*FC [[fire-control radar]]
*FD fire-control radar
}}
|}

'''USS ''Helena''''' was a {{sclass|Brooklyn|cruiser|0}} [[light cruiser]] built for the [[United States Navy]] in the late 1930s, the ninth and final member of the [[ship class|class]]. The ''Brooklyn''s were the first modern light cruisers built by the US Navy under the limitations of the [[London Naval Treaty]], and they were intended to counter the Japanese {{sclass|Mogami|cruiser|4}}; as such, they carried a battery of fifteen {{convert|6|in|adj=on}} guns, the same gun armament carried by the ''Mogami''s. ''Helena'' and her sister {{USS|St. Louis|CL-49|2}} were built to a slightly modified design with a [[unit system of machinery]] and an improved anti-aircraft battery. Completed in 1939, ''Helena'' spent the first two years of her career in peacetime training that accelerated as tensions between the United States and [[Empire of Japan|Japan]] increased through 1941. She was torpedoed at the [[attack on Pearl Harbor]] in December 1941 and was repaired and modernized in early 1942.

After returning to service, ''Helena'' was assigned to the forces participating in the [[Guadalcanal campaign]] in the south Pacific. There, she took part in two major night battles with Japanese vessels in October and November 1942. The first, the [[Battle of Cape Esperance]] on the night of 11–12 October, resulted in a Japanese defeat, with ''Helena''{{'}}s rapid-fire 6-inch battery helping to sink a [[heavy cruiser]] and a [[destroyer]]. The second, the first night of the [[Naval Battle of Guadalcanal]] in the early hours of 13 November, saw a similar defeat imposed on the Japanese; again, ''Helena''{{'}}s fast shooting helped to overwhelm a Japanese task force that included two [[fast battleship]]s, one of which was disabled by heavy American fire and sank the next day. ''Helena'' sank a destroyer and damaged several others in the action while emerging relatively unscathed. During her tour in the south Pacific, she also escorted convoys carrying supplies and reinforcements to the [[USMC|Marines]] fighting on [[Guadalcanal]] and bombarded Japanese positions on the island and elsewhere in the [[Solomon Islands|Solomons]].

Following the American victory on Guadalcanal in early 1943, [[Allies of World War II|Allied]] forces began preparations to advance along the Solomon chain, first targeting [[New Georgia]]. ''Helena'' took part in a series of preparatory attacks on the island through mid-1943, culminating in an amphibious assault in the [[Kula Gulf]] on 5 July. The next night, while attempting to intercept a Japanese reinforcement squadron, ''Helena'' was torpedoed and sunk in the [[Battle of Kula Gulf]]. Most of her crew were picked up by a pair of destroyers and one group landed on New Georgia where they were evacuated the next day, but more than a hundred remained at sea for two days, ultimately making land on Japanese-occupied [[Vella Lavella]]. There, they were hidden from Japanese patrols by Solomon Islanders and a [[coastwatcher]] detachment before being evacuated on the night of 15–16 July. ''Helena''{{'}}s wreck was located in 2018 by [[Paul Allen]].

==Design==
{{main|Brooklyn-class cruiser}}
[[File:USSHelena-CL-50-Sliding.jpg|thumb|left|''Helena'' at her launching ceremony]]

As the major naval powers negotiated the [[London Naval Treaty]] in 1930, which contained a provision limiting the construction of [[heavy cruiser]]s armed with {{convert|8|in|adj=on|0}} guns, United States naval designers came to the conclusion that with a [[displacement (ship)|displacement]] limited to {{convert|10000|LT|t|0|lk=on}}, a better protected vessel could be built with an armament of {{cvt|6|in|0}} guns. The designers also theorized that the much higher [[rate of fire]] of the smaller guns would allow a ship armed with twelve of the guns to overpower one armed with eight 8-inch guns. During the design process of the {{sclass|Brooklyn|cruiser|4}}, which began immediately after the treaty was signed, the [[US Navy]] became aware that the next class of Japanese cruisers, the {{sclass|Mogami|cruiser|4}}, would be armed with a [[main battery]] of fifteen 6-inch guns, prompting them to adopt the same number of guns for the ''Brooklyn''s. After building seven ships to the original design, additional changes were incorporated, particularly to the propulsion machinery and the [[secondary armament|secondary battery]], resulting in the ''St. Louis'' sub-class, of which ''Helena'' was the second member.{{sfn|Whitley|pp=248–249}}{{sfn|Friedman 1980|p=116}}{{efn|''Helena'' and {{USS|St. Louis|CL-49|2}} are sometimes considered to be a distinct class separate from the rest of the ''Brooklyn''s,{{sfn|Silverstone|p=29}} as the US Navy classified them as such.{{sfn|Naval Historical Division|p=202}} But the majority of naval historians describe them as either part of the ''Brooklyn'' class with no distinction,{{sfn|Friedman 1980|p=116}}{{sfn|Whitley|p=248}}{{sfn|Terzibaschitsch|p=20}} or as a sub-class,{{sfn|Bonner|p=55}} so this article follows that approach.}}

''Helena'' was {{convert|607|ft|4.125|in|0}} [[length overall|long overall]] and had a [[beam (nautical)|beam]] of {{convert|61|ft|7.5|in|abbr=on}} and a [[draft (nautical)|draft]] of {{convert|22|ft|9|in|abbr=on}}. Her [[standard displacement]] amounted to {{convert|10000|LT|t|abbr=on|0}} and increased to {{convert|12207|LT|t|0|abbr=on}} at [[Full-load displacement|full load]]. The ship was powered by four [[Parsons Marine Steam Turbine Company|Parsons]] [[steam turbines]], each driving one propeller shaft, using steam provided by eight oil-fired [[Babcock & Wilcox boiler]]s. Unlike the ''Brooklyn''s, the two ''St. Louis''-class cruisers arranged their machinery in the [[Unit system of machinery|unit system]], alternating [[fire room|boiler]] and [[engine room]]s. Rated at {{convert|100000|shp|lk=on}}, the turbines were intended to give a top speed of {{convert|32.5|kn|lk=in}}. The ship had a cruising range of {{convert|10000|nmi|lk=in|-1}} at a speed of {{convert|15|kn}}. She carried four [[Curtiss SOC Seagull]] [[floatplane]]s for aerial reconnaissance, which were launched by a pair of [[aircraft catapult]]s on her [[fantail (ship)|fantail]]. Her crew numbered 52&nbsp;officers and 836&nbsp;enlisted men.{{sfn|Friedman 1980|p=116}}{{sfn|Friedman 1984|p=475}}{{sfn|Whitley|p=248}}

The ship was armed with a main battery of fifteen [[6"/47 caliber gun|6 in /47 caliber Mark 16 guns]]{{efn|/47 refers to the length of the gun in terms of [[Caliber (artillery)|calibers]]. A /47 gun is 47 times long as it is in bore diameter.}} in five 3-[[gun turret]]s on the centerline. Three were placed forward, two of which were placed in a [[superfire|superfiring pair]] facing forward, with the third being directly pointed aft; the other two turrets were placed aft of the [[superstructure]] in another superfiring pair. The secondary battery consisted of eight [[5"/38 caliber gun|{{cvt|5|in|0}} /38 caliber]] [[dual purpose gun]]s mounted in twin turrets, with one turret on either side of the [[conning tower]] and the other pair on either side of the aft superstructure. As designed, the ship was equipped with an anti-aircraft (AA) battery of eight {{convert|0.5|in|abbr=on}} guns, but her anti-aircraft battery was revised during her career. The ship's [[belt armor]] consisted of 5&nbsp;inches on a layer of {{cvt|0.625|in}} of [[special treatment steel]] and her deck armor was {{cvt|2|in}} thick. The main battery turrets were protected with {{cvt|6.5|in}} faces and they were supported by [[barbette]]s 6&nbsp;inches thick. ''Helena''{{'}}s conning tower had 5-inch sides.{{sfn|Friedman 1980|p=116}}{{sfn|Friedman 1984|p=475}}{{sfn|Whitley|p=248}}

===Modifications===
The main prewar alterations to the ship revolved around her anti-aircraft battery: in 1941, the Navy decided that each member of the ''Brooklyn'' class was to be equipped with four quadruple [[1.1-inch/75-caliber gun|{{cvt|1.1|in}} anti-aircraft guns]], but the guns were in short supply, and ''Helena'' was the only member of the class to have received any of her 1.1&nbsp;in guns by November 1941. The guns ''Helena'' received were placed in the mounts for the .50-cal guns, which were transferred to wheeled carts that could be moved to different firing positions.{{sfn|Whitley|p=249}}{{sfn|Wright|pp=23, 29}}

The ship was reconstructed in 1942 during repairs as a result of damage sustained in the Japanese [[attack on Pearl Harbor]] on 7 December 1941. SG [[surface search radar]], SC [[air search radar]], and FC and FD [[fire-control radar]] sets for her main and secondary batteries were installed, along with a new anti-aircraft battery of eight [[Oerlikon 20 mm cannon|{{cvt|20|mm}} Oerlikon]] cannon and sixteen [[Bofors 40 mm Automatic Gun L/60|{{cvt|40|mm}} Bofors]] guns in quadruple mounts, along with a director for each Bofors mount.{{sfn|Wright|pp=33, 36}}{{sfn|Domagalski|p=2}} Her 1.1&nbsp;in guns were removed to arm her [[sister ship]]s {{USS|Honolulu|CL-48|2}} and {{USS|Phoenix|CL-46|2}}. The ship's armored conning tower had proved to inhibit good all-around visibility, so it was removed and an open [[bridge (nautical)|bridge]] was erected in its place.{{sfn|Whitley|p=249}}{{sfn|Bonner|p=57}} In addition, the weight savings achieved by removing the tower helped to offset the increased weight from the larger anti-aircraft battery.{{sfn|Wright|p=39}} The conning tower, along with those of several of the ''Brooklyn''-class cruisers that were also rebuilt in 1942, were later installed on the reconstructed battleships that had been sunk at Pearl Harbor.{{sfn|Friedman 1980|p=92}}

==Service history==
[[File:USS Helena (CL-50) anchored off Boston on 15 June 1940 (NH 95815).jpg|thumb|''Helena'' in 1940]]

===Construction and early career===

The US Navy awarded the contract for ''Helena'' to the [[New York Navy Yard]] on 9 September 1935, and the [[keel]] for the new ship was [[keel laying|laid down]] on 9 December 1936. Her completed [[hull (watercraft)|hull]] was [[ship launching|launched]] on 28 August 1938 and she was [[ship commissioning|commissioned]] on 18 September 1939 with the [[hull number]] CL-50.{{sfn|Friedman 1980|p=116}}{{sfn|Wright|p=24}}{{sfn|DANFS}} [[World War II]] had broken out in Europe in September that year, but for the time being, the United States remained neutral. After entering service, the ship was occupied with [[sea trials]] and initial training, and she embarked on a major [[shakedown cruise]] abroad on 27 December, bound for South American waters. She stopped in [[Guantanamo Bay Naval Base|Guantanamo Bay]], an American-leased naval base in Cuba, on the way before arriving in [[Buenos Aires]], Argentina, on 22 January 1940; from there, she continued on to [[Montevideo]], Uruguay, on 29 January. While in the latter port, the crew inspected the wreck of the German heavy cruiser {{ship|German cruiser|Admiral Graf Spee||2}} that had recently been [[scuttling|scuttled]] after the [[Battle of the River Plate]] the previous month. ''Helena'' got underway again in mid-February to return to the United States, again passing through Guantanamo Bay on the way. After returning, she was [[dry-dock]]ed for repairs from 2 March to 14 July.{{sfn|Wright|p=24}}{{sfn|Bonner|pp=55–56}}

She took part in training exercises and sea trials over the next several months until September, when she was transferred to the [[United States Pacific Fleet|Pacific Fleet]]. She passed through the [[Panama Canal]] toward the end of the month and arrived in [[San Pedro, California]], on 3 October. From there, she continued on to [[Pearl Harbor]], [[Territory of Hawaii|Hawaii]] to join the rest of the fleet, arriving there on 21 October. Over the course of the next year, the fleet spent its time conducting training exercises and shooting practice as tensions with Japan rose over the latter's [[Second Sino-Japanese War|war against China]].{{sfn|Bonner|p=56}} During this period, from 14 July 1941 to 16 September, the ship was dry-docked for maintenance at the [[Mare Island Naval Shipyard]] in [[California]]; it was during this period that the ship received her 1.1-inch guns.{{sfn|Wright|p=23}} ''Helena'' was slated to be dry-docked for another periodic maintenance in December 1941, and was moored in port with the [[minelayer]] {{USS|Oglala||2}} tied alongside on 6 December, awaiting her turn in the shipyard. The ships happened to be moored in the berth normally reserved for the battleship {{USS|Pennsylvania|BB-38|2}}, which was currently in the dry-dock. The ship's commander was at that time Captain [[Robert Henry English]].{{sfn|Bonner|p=56}}{{sfn|DANFS}}

===World War II===
====Attack on Pearl Harbor====
{{main|Attack on Pearl Harbor}}

[[File:USS Oglala (CM-4) capsized at Pearl Harbor, 7 December 1941 (80-G-474789).jpg|thumb|''Helena'' (center left) at 1010 dock after the attack; ''Oglala'' has been towed astern where she capsized. Smoke clouds from the burning destroyers {{USS|Cassin|DD-372|2}} and {{USS|Downes|DD-375|2}} rise in the distance beyond ''Helena'', while those from the battleship {{USS|Nevada|BB-36|2}} are visible to the right. The battleship {{USS|California|BB-44|2}} is down by the bow but has not yet sunk.|left]]

On the morning of 7 December, the Japanese launched their surprise attack on the American fleet with a first wave of forty [[Nakajima B5N]] [[torpedo bomber]]s, fifty-one [[Aichi D3A]] [[dive bomber]]s, and fifty B5N high-level bombers, escorted by forty-three [[Mitsubishi A6M Zero]] [[fighter aircraft|fighters]].{{sfn|Rohwer|p=122}} The Japanese expected ''Pennsylvania'' to be in her normal berth. Three minutes into the attack, which had begun at 07:55, a B5N torpedo bomber dropped its torpedo at what its pilot expected to be the battleship. The torpedo passed underneath ''Oglala'' and exploded against ''Helena''{{'}}s hull on the [[starboard]] side, nearly [[amidships]]. The blast tore a hole in the hull that flooded the starboard engine and boiler rooms and severed wiring for the main and secondary guns. The ship's crew raced to their battle stations and two minutes after the torpedo hit, the backup forward diesel generator had been turned on, restoring power to the guns.{{sfn|DANFS}}{{sfn|Bonner|pp=56–57}} ''Oglala'' was less fortunate than ''Helena'', as the blast effect loosened hull plates on the minelayer and caused her to capsize.{{sfn|Zimm|p=182}}

The first pilot had mistaken the superimposed silhouettes of the two ships, backlit by the sun, to be ''Pennsylvania''. The second torpedo bomber in the wave closed to within {{cvt|600|yd}} of ''Helena'' and ''Oglala'' when the pilot realized the first pilot's mistake, breaking off his attack run and causing two more pilots to do the same. Four other pilots pressed their attacks, but all of their torpedoes missed; by this time, the ship's anti-aircraft guns were beginning to engage the Japanese attackers, forcing one of the bombers to drop their torpedo before they reached an ideal launch position. One of the torpedoes went wide and hit a [[transformer]] station, while the other three ran deep and embedded themselves in the harbor floor.{{sfn|Zimm|p=160}} During these attacks, one of the fighters strafed the ship, causing little damage.{{sfn|Helena Report}}

At the same time that the first wave had begun their attacks, the Japanese [[aircraft carrier]]s launched a second wave consisting of eighty-one dive bombers, fifty-four high-level bombers, and thirty-six fighters.{{sfn|Rohwer|p=122}} As ''Helena''{{'}}s anti-aircraft guns got into action, they helped to fend off further attacks from the second strike wave while other men worked to control flooding by closing the many watertight hatches in the ship.{{sfn|DANFS}}{{sfn|Bonner|pp=56–57}} The heavy anti-aircraft fire was credited with disrupting the aim of several Japanese bombers, which failed to hit the vessel with an estimated four near misses. Of these, one struck the pier while the other three landed in the water on her starboard side.{{sfn|Helena Report}}

''Helena''{{'}}s anti-aircraft battery provided a heavy barrage of fire during the attack; she fired approximately 375&nbsp;shells from her 5-inch guns, around 3,000&nbsp;rounds from her 1.1-inch guns, and about 5,000&nbsp;rounds from her .50-cal. guns.{{sfn|Helena Report}} She was credited with shooting down six Japanese aircraft,{{sfn|Bonner|p=57}} out of a total of twenty-nine aircraft downed in the raid.{{sfn|Rohwer|p=122}} Twenty-six men were killed in the initial attack and another five later died of their wounds, while another sixty-six were injured but recovered. A significant number of the casualties were the result of the torpedo hit, with many of the remainder from bomb fragments from the near misses.{{sfn|Helena Report}}

Two days after the attack, ''Helena'' was moved into dry dock No. 2 in Pearl Harbor for an inspection and temporary repairs to allow her to return to the [[west coast of the United States]]. Steel plates were welded over the torpedo hole and on 31 December, ''Helena'' was re-floated. She got underway for Mare Island for permanent repairs and modifications on 5 January 1942 in company with a convoy bound for California. The vessel arrived in the shipyard on 13 January and was dry-docked six days later. Repair work was completed by 4 July, with initial sea trials taking place on 3 to 4 July; only the directors for the 40&nbsp;mm guns, still en route from the manufacturer, were left to be fitted. The directors arrived shortly thereafter and were installed on 10 July. ''Helena'' then conducted a brief period of training that lasted until 15 July, when she returned to Mare Island to have her SG radar installed.{{sfn|Wright|pp=33, 36}} She departed Mare Island later that month, moving to San Francisco where she joined six transports bound for the south Pacific. The transports carried a contingent of [[Seabee]]s to [[Espiritu Santo]]. There, ''Helena'' joined Task Force (TF) 64, then in the midst of the fighting around [[Guadalcanal]].{{sfn|DANFS}}{{sfn|Bonner|pp=57–58}}{{sfn|Hornfischer|pp=141–143}}

====Guadalcanal Campaign====
[[File:USS Helena (CL-50) off the Mare Island Naval Shipyard on 1 July 1942 (NH 95813).jpg|thumb|''Helena'' on 1 July 1942, off Mare Island]]

{{main|Guadalcanal Campaign}}

Over the course of the next two months, ''Helena'' and the rest of TF&nbsp;64 were occupied with covering reinforcement [[convoy]]s to support the [[USMC|Marines]] fighting on Guadalcanal and escorting carrier battle groups in the area. While ''Helena'' operated with the carrier {{USS|Wasp|CV-7|2}} on 15 September, a Japanese submarine attacked the fleet and hit ''Wasp'' with three torpedoes, inflicting fatal damage. ''Helena'' picked up some four hundred survivors from ''Wasp'' and carried them back to Espiritu Santo. Shortly thereafter, Captain [[Gilbert C. Hoover]] came aboard the ship to replace English.{{sfn|DANFS}}{{sfn|Bonner|p=58}} By this time, the task force consisted of ''Helena'', her sister ship {{USS|Boise|CL-47|2}}, the heavy cruisers {{USS|San Francisco|CA-38|2}} and {{USS|Salt Lake City|CA-25|2}}, and the destroyers {{USS|Farenholt|DD-491|2}}, {{USS|Duncan|DD-485|2}}, {{USS|Buchanan|DD-484|2}}, {{USS|McCalla|DD-488|2}}, and {{USS|Laffey|DD-459|2}}.{{sfn|Frank|p=297}}

Following the [[Actions along the Matanikau]] in late September and early October, the decision was made to send further reinforcements to the island, and so the [[164th Infantry Regiment]] of the [[Americal Division]] embarked on a pair of [[destroyer transport]]s; TF&nbsp;64 provided the close escort for the vessels, screening them to the west to prevent Japanese forces from intercepting them. By this time, the unit was commanded by [[Rear Admiral]] (RADM) [[Norman Scott (admiral)|Norman Scott]], who conducted one night of battle practice with his ships on 8 October before embarking on the operation. The ships patrolled to the south, just out of range of Japanese aircraft based in [[Rabaul]] over the course of 9 and 10 October and each day at 12:00 Scott took his ships north to [[Rennell Island]], where they would be in position to reach [[Savo Island]] to block a Japanese squadron if it was detected by air. On 11 October, American aerial reconnaissance detected Japanese vessels moving toward the island carrying their own reinforcements, and Scott decided to try to intercept them.{{sfn|Frank|pp=292–296}}

=====Battle of Cape Esperance=====
[[File:CapeEsperanceChart1.jpg|thumb|right|Map showing the movements of Gotō's and Jojima's forces during the battle. The light gray line skirting Savo Island depicts Gotō's planned approach and exit route for the bombardment mission. ''Hatsuyuki'' is misidentified as ''Murakumo''.]]

{{main|Battle of Cape Esperance}}

Unknown to Scott, the Japanese had sent a group of cruisers and destroyers to bombard the American garrison on Guadalcanal; this unit, commanded by Rear Admiral [[Aritomo Gotō]], consisted of the heavy cruisers {{Ship|Japanese cruiser|Aoba||2}}, {{Ship|Japanese cruiser|Kinugasa||2}}, and {{Ship|Japanese cruiser|Furutaka||2}} and the destroyers {{Ship|Japanese destroyer|Fubuki|1927|2}} and {{Ship|Japanese destroyer|Hatsuyuki|1928|2}}. As the two squadrons approached each other in the darkness at the southern end of [[New Georgia Sound#WWII—The Slot|the Slot]] shortly before 22:00 on 11 October, three of the four American cruisers launched their floatplanes, but ''Helena'' did not receive the instruction from Scott aboard his [[flagship]] ''San Francisco'', and so her crew dumped the aircraft overboard to reduce the risk of fire in the event of a battle. By 22:23, the American ships had arranged themselves into a line in the order ''Farenholt'', ''Duncan'', ''Laffey'', ''San Francisco'', ''Boise'', ''Salt Lake City'', ''Helena'', ''Buchanan'', and ''McCalla''; this was despite the fact that ''Helena'' and ''Boise'' both carried SG radar, which was significantly more effective than the SC sets carried by the other vessels.{{sfn|Frank|pp=294, 296–298}}{{sfn|Rohwer|p=201}} The distance between each ship ranged from {{convert|500|to|700|yd|m|abbr=on}}. Visibility was poor because the moon had already set, leaving no [[Low-key lighting|ambient light]] and no visible sea [[horizon]].{{sfn|Cook|pp=20, 26, 36}}{{sfn|Morison|pp=152–153}}

''Helena''{{'}}s radar operators picked up the oncoming Japanese squadron at 23:25, fixing their position as being {{cvt|27700|yd}} away at 23:32. Shortly after ''Helena'' initially detected the Japanese, Scott had reversed the course of his ships, steaming to the southwest as Gotō's vessels steamed perpendicular to Scott's course. This would place the American squadron in position to [[Crossing the T|cross the T]] of the Japanese formation. Officers aboard ''Helena'' assumed that Scott was aware of the contacts based on his course reversal. By 23:45, the gunnery radar of the American flagship finally detected the Japanese at a range of only {{cvt|5000|yd}}, which was confirmed by [[lookout]]s on the American vessels. Hoover requested permission from Scott to open fire, and after receiving what he interpreted as an affirmative answer, he ordered his guns to begin firing at 23:46.{{efn|Hoover requested permission to fire with the General Signal Procedure (GSP) request "Interrogatory Roger" (which meant "are we clear to act?"). Scott replied with "Roger", only indicating that he had received Hoover's message, but Hoover interpreted it an affirmative, as according to the GSP, an unqualified "roger" also meant to open fire.{{sfn|Frank|p=301}}}} The other ships in the squadron quickly followed ''Helena''{{'}}s example. Gotō was at that time still unaware of the Americans' presence and his ships were not prepared for action, having assumed that after the [[Battle of Savo Island]], American naval forces would not challenge Japanese warships at night.{{sfn|Morison|pp=152–153}}{{sfn|Frank|pp=299–302}}{{sfn|Cook|pp=58–60}}

The initial salvos struck ''Aoba'', inflicting serious damage and mortally wounding Gotō, causing further confusion on the Japanese ships. After only a minute of firing, Scott ordered his ships to cease firing because he was concerned they were accidentally shooting at the leading trio of destroyers, which had fallen out of formation during the course reversal. Fire from the American ships did not actually stop at this point, and after clarifying the position of his ships, he ordered TF&nbsp;64 to resume firing at 23:51. During this period, the captain of ''Furutaka'' turned to port to escape the heavy American fire, but reversed course at 23:49 to come to ''Aoba''{{'}}s aid. This maneuver rewarded ''Furutaka'' with numerous shell hits from several warships including ''Helena'', at least one of which detonated the torpedoes in her deck launchers and caused a major fire. ''Kinugasa'' also immediately turned to port, but unlike ''Furutaka'', her captain continued to withdraw along with ''Hatsuyuki'', avoiding any damage to his vessel. ''Fubuki'' turned to a course parallel with the American squadron; initially targeted by ''San Francisco'' and ''Boise'' and set on fire, ''Fubuki'' then drew heavy fire from most of the other vessels. In the confused, close-range action, either ''Helena'' or ''Boise'' (the only ships armed with 6-inch guns) accidentally hit ''Farenholt'', causing flooding and a fuel leak that forced her to withdraw from the battle.{{sfn|Frank|pp=302–304}}{{sfn|Cook|pp=68–70, 83–84}}{{sfn|Morison|pp=158–160}}

At around midnight, Scott sought to reorganize his squadron to more effectively pursue the Japanese vessels; he ordered his ships to flash their fighting lights and come back into formation. At 00:06, lookouts aboard ''Helena'' and ''Boise'' spotted the wakes of torpedoes that had been launched by ''Kinugasa'' as she withdrew. Shortly thereafter, ''Kinugasa'' opened fire with her main battery, inflicting serious damage to ''Boise''. After a short duel between ''Kinugasa'' and ''Salt Lake City'', Scott broke off the action as the Japanese continued to flee northeast. Despite having been hit more than forty times, ''Aoba'' survived the battle, though ''Furutaka'' eventually succumbed to progressive flooding, as did ''Fubuki''; ''Helena'' contributed to both vessels' demise. Despite having defeated the Japanese bombardment force, Scott missed a second group of warships carrying reinforcements to Guadalcanal, and they were able to deposit their men and supplies without incident.{{sfn|Frank|pp=304–307, 312}}{{sfn|Whitley|p=253}}

Shortly after the battle, the new [[fast battleship]] {{USS|Washington|BB-56|2}} was transferred to TF&nbsp;64, which now came under the command of RADM [[Willis Lee]]. By this time, the unit also included ''Helena'', ''San Francisco'', the light cruiser {{USS|Atlanta|CL-51|2}}, and six destroyers. On 20 October, ''Helena'' came under attack from a Japanese submarine while she patrolled between Espiritu Santo and [[Makira|San Cristobal]], but the torpedoes missed. Over the course of 21–24 October, Japanese land-based reconnaissance aircraft made repeated contacts with TF&nbsp;64 as a Japanese fleet approached the area, but in the [[Battle of the Santa Cruz Islands]] that began on the 25th, the Japanese concentrated their air attacks on the American carriers of TF&nbsp;17 and 61 and Lee's ships saw no action. On 4 November, ''Helena'' was back off Guadalcanal to provide fire support during the [[Koli Point action]]. ''Helena'', ''San Francisco'', and the destroyer {{USS|Sterett|DD-407|2}} shelled Japanese positions as they came under attack from elements of the 164th Infantry Regiment and the [[8th Marines]], ultimately annihilating the Japanese defenders by 9 November.{{sfn|DANFS}}{{sfn|Rohwer|pp=201, 205–207}}{{sfn|Frank|pp=378, 420}}

===== Naval Battle of Guadalcanal =====
[[File:NavalGuadalcanal1.gif|thumb|Approximate routes of Japanese force under Abe (red line) and U.S. force under Callaghan (black line) as they head towards each other early on 13 November in [[Ironbottom Sound]] between Savo Island, Cape Esperance, and [[Lunga Point]] on Guadalcanal. The green area near Lunga Point on Guadalcanal marks the location of Henderson Field.]]

{{main|Naval Battle of Guadalcanal}}

In early November, both sides began preparations to resupply their forces fighting on and around Guadalcanal. An American convoy carrying 5,500&nbsp;soldiers and supplies was organized, to be covered by TF&nbsp;16, centered on the carrier {{USS|Enterprise|CV-6|2}}; ''Washington'' was detached from TF&nbsp;64 to strengthen the covering force and the cruiser unit was reorganized as TF&nbsp;67.4 and assigned as the close escort. Commanded by RADM [[Daniel J. Callaghan]], the unit now included, in addition to ''Helena'', the heavy cruisers ''San Francisco'' and {{USS|Portland|CA-33|2}}, the light cruisers ''Atlanta'' and {{USS|Juneau|CL-52|2}}, and the destroyers {{USS|Cushing|DD-376|2}}, ''Laffey'', ''Sterett'', {{USS|O'Bannon|DD-450|2}}, {{USS|Aaron Ward|DD-483|2}}, {{USS|Barton|DD-599|2}}, {{USS|Monssen|DD-436|2}}, and {{USS|Fletcher|DD-445|2}}. Overall command rested with RADM [[Richmond K. Turner]]. Meanwhile, the Japanese had assembled a convoy of their own carrying 7,000 men and supplies for the army already on Guadalcanal; it was to be supported by a bombardment force of two fast battleships, a light cruiser, and eleven destroyers. A total of four heavy and one light cruisers and six destroyers would cover the convoy.{{sfn|Frank|pp=429–430, 435}}{{sfn|Rohwer|pp=210–211}}

On 12 November, Callaghan's ships and their transport vessels arrived off Guadalcanal, and while they unloaded, a Japanese artillery battery opened fire on the transports. ''Helena'' and then some of the destroyers returned fire to suppress the Japanese gunners. A Japanese airstrike interrupted the work; two ships were damaged but ''Helena'' emerged unscathed. Reconnaissance aircraft detected the approach of the Japanese bombardment force, the convoy, and a detached group of destroyers. Turner believed that the Japanese aimed to either attack TF 67.4 and the transports as they withdrew that night or to bombard the Americans on Guadalcanal; he decided to keep Callaghan's unit off Guadalcanal and to send the convoy off with an escort of just three destroyers and two [[destroyer minesweeper]]s, as TF&nbsp;16 was too far south to be able to reach the area. Callaghan escorted the convoy through [[Lengo Channel]] before turning back west to position his ships between the Japanese squadron and the garrison on Guadalcanal. The approaching Japanese force, commanded by RADM [[Hiroaki Abe]], centered on the battleships {{ship|Japanese battleship|Hiei||2}} and {{ship|Japanese battleship|Kirishima||2}}.{{sfn|DANFS}}{{sfn|Frank|pp=430–436}}{{sfn|Rohwer|p=211}}

Callaghan arranged his ships in a single column, as Scott had done at Cape Esperance, and he similarly failed to realize the advantage that the SG-radar-equipped ships provided, eschewing those vessels so-equipped for ''San Francisco''. Scott had transferred to ''Atlanta'', which did not mount an SG, but it was placed as the frontmost cruiser. Abe's ships reached the area off Cape Esperance at around 01:25 on 13 November, by which time his vessels had fallen into disarray due to bad weather that greatly hampered visibility. The destroyers he believed were screening his advance were in fact out of position. Abe was aware of Callaghan's presence off Guadalcanal earlier in the day, but did not know his current whereabouts. At 01:30, he received a report from observers that there were no American vessels off [[Lunga Point]], leading him to order his ships to begin preparations for a bombardment. By this time, ''Helena'' had already picked up Abe's ships six minutes before at a distance of {{cvt|27100|yd}}. Callaghan was not aware, as ''San Francisco'' had not yet detected the Japanese.{{sfn|Frank|pp=436–438}}

[[File:IronbottomSound.jpg|thumb|left|Ironbottom Sound between Savo Island (center) and Guadalcanal (left), where the majority of the warship surface battle of 13 November took place]]

Both sides' destroyers encountered each other at 01:42; continued confusion on Callaghan's part led to contradictory orders that threw the American squadron into disarray just as the two forces collided. In the ensuing close-range melee, he ordered "odd ships fire to starboard, even ships fire to port",{{sfn|Frank|pp=438–440}} although he had not assigned any numbering system beforehand. Abe received incomplete reports from his destroyers, causing him to hesitate briefly before ordering his ships to open fire at 01:48. As the American and Japanese ships engaged each other in the chaotic battle, ''Helena'' initially engaged the destroyer {{ship|Japanese destroyer|Akatsuki|1932|2}}, disabling her searchlight but drawing return fire that did insignificant damage. Bombarded by several other vessels, ''Akatsuki'' exploded under heavy fire and quickly sank. ''Helena'' then shifted fire to the destroyer {{ship|Japanese destroyer|Amatsukaze|1939|2}} at 02:04, only to be forced to check her fire when ''San Francisco'' passed between the two vessels. ''Helena'' nevertheless scored several hits that forced ''Amatsukaze'' to disengage; the Japanese destroyer was only saved from destruction by an attack by the destroyers {{ship|Japanese destroyer|Asagumo|1937|2}}, {{ship|Japanese destroyer|Murasame|1935|2}}, and {{ship|Japanese destroyer|Samidare|1935|2}} that caused ''Helena'' to engage them. ''Murasame'' received a hit that disabled one of her boiler rooms, forcing her to withdraw as well, while ''Samidare'' was set on fire.{{sfn|Frank|pp=440–446, 449–450}}{{sfn|Morison|pp=242–243}}{{sfn|Hammel|pp=137–138}}

During this period, one of her 40&nbsp;mm guns fired at the cruiser {{ship|Japanese cruiser|Nagara||2}} as she steamed in the opposite direction. ''Helena'' then continued to maneuver among both sides' burning vessels, firing on a number of retreating Japanese vessels.{{sfn|Frank|pp=446}} As ''San Francisco'', which had been badly damaged by ''Hiei'', continued on through the melee, ''Helena'' turned to follow her to try to protect her from further harm.{{sfn|Hammel|p=234}} In the course of the 38-minute action, the American squadron was badly damaged and both Callaghan and Scott were killed in the confused fighting, the latter by friendly fire from ''San Francisco''. ''Helena'' emerged relatively unscathed, having received five hits that did negligible damage and killed one man. Two American destroyers were sunk, three more were disabled, as were two cruisers. In return, ''Hiei'' was badly damaged and would later be scuttled after repeated American air attacks the next day prevented her withdrawal; one destroyer had been sunk and a second was badly damaged. And more importantly, Callaghan's ships had prevented Abe from bombarding the airfield on Guadalcanal.{{sfn|Frank|pp=443–446, 452, 454–456, 459}}

Hoover, the senior surviving officer in the shattered American squadron, ordered all vessels still in action to withdraw to the southeast at 02:26 while the Japanese retreated in the opposite direction. Hoover collected ''San Francisco'', ''Juneau'', ''Sterett'', and ''O'Bannon'' and escorted them south. At 11:00, the Japanese submarine {{ship|Japanese submarine|I-26||2}} fired a spread of torpedoes at ''San Francisco'' that missed, but one hit ''Juneau''. The torpedo detonated one of the ship's [[magazine (artillery)|magazines]] and combined with the damage she had sustained the previous night, caused her to rapidly sink. Hoover decided that ''Helena'' was too valuable to risk stopping to pick up what he assumed to be very few survivors, and the other vessels in the group were too damaged to stop either. He instead signaled to a passing [[B-17]] bomber, but the report of ''Juneau''{{'}}s fate was not delivered promptly, preventing other vessels from attempting rescue operations. Admiral [[William Halsey Jr.|William Halsey]] subsequently relieved Hoover of command, citing his failure to ensure a prompt report of the sinking was made, to attack the submarine, or to mount rescue operations. After the war, Halsey expressed regret over the episode, noting that Hoover had been exhausted by the previous night's fighting and that he had been motivated by the need to preserve his ship and those under his temporary command.{{sfn|Frank|pp=451, 456–457}}{{sfn|Morison|p=257}}{{sfn|Kilpatrick|pp=101–103}} Captain [[Charles P. Cecil]] replaced Hoover as the ship's commander.{{sfn|Domagalski|p=3}}

====Operations in 1943====
[[File:USS Helena (CL-50) firing during the Munda-Vila Bombardment, 13 May 1943 (NH 76496).jpg|thumb|left|''Helena'' obscured by the flash of her guns during a bombardment of [[Munda, Solomon Islands|Munda]] in May 1943]]

Beginning in January 1943, ''Helena'' took part in several attacks on Japanese positions on the island of [[New Georgia]] in preparation for the planned [[New Georgia campaign]].{{sfn|DANFS}} The first of these took place from 1 to 4 January, when ''Helena'' (still as part of TF&nbsp;67) covered a group of seven transports carrying elements of the [[25th Infantry Division (United States)|25th Infantry Division]] to Guadalcanal. The unit at that time included six other cruisers and five destroyers, and was commanded by RADM [[Walden L. Ainsworth]]. Ainsworth left four cruisers and three destroyers to cover the convoy on the 4th, taking ''Helena'', her sisters {{USS|St. Louis|CL-49|2}} and {{USS|Nashville|CL-43|2}}, and two destroyers to bombard [[Munda, Solomon Islands|Munda]] in the early hours of 5 January. The ships fired a total of some 4,000&nbsp;shells, but inflicted little significant damage to the Japanese airfield. The ships returned to Guadalcanal at 09:00 and began recovering their reconnaissance floatplanes when a Japanese airstrike arrived and damaged two of the other cruisers, though ''Helena'' was not targeted. The ship had received the new 5-inch shells fitted with proximity [[VT fuse]]s, and her use marked the first time they were used successfully in combat.{{sfn|Frank|pp=548–549}}{{sfn|Rohwer|p=223}}

''Helena'' and the rest of her unit then returned to Espiritu Santo to refuel and replenish ammunition, remaining there until the morning of 22 January.{{sfn|Domagalski|pp=1–3}} Halsey had ordered Ainsworth to make an attack on [[Vila, Solomon Islands|Vila]] on the island of [[Kolombangara]] to neutralize the airfield there, and on 23 January he conducted a feint toward Munda to throw off Japanese aircraft who might have launched night torpedo attacks against his vessels. As at Munda, Ainsworth left a pair of cruisers and three destroyers to provide distant support while he took ''Helena'', ''Nashville'', and four destroyers into [[Kula Gulf]] to shell the airstrip. A "Black Cat" [[Consolidated PBY Catalina|PBY Catalina]] provided spotting support while the two cruisers fired around 3,500&nbsp;shells from the main and secondary gun, inflicting significant damage on the airfield and equipment. The Japanese launched group of eleven floatplanes to scout for Ainsworth's cruisers while a second group of thirty [[Mitsubishi G4M]] bombers, but the American ships used rain [[squall]]s to evade the floatplanes, along with long-range 5-inch fire directed by the SC and FD radars to keep the aircraft at bay. At dawn, a group of five [[P-38]] fighters arrived to escort the ships during their continued withdrawal.{{sfn|Frank|pp=572–573}}{{sfn|Domagalski|pp=26–28}}

[[File:USS St. Louis (CL-49), USS Honolulu (CL-48) and USS Helena (CL-50) maneuvering off Espiritu Santo on 20 June 1943 (80-G-57073).jpg|thumb|''St. Louis'' (left), ''Honolulu'' (center), and ''Helena'' (right) off Espiritu Santo in June 1943]]

On 25 January, ''Helena'' and the rest of the squadron arrived back in Espiritu Santo.{{sfn|Domagalski|p=28}} ''Helena'' continued to operate with TF&nbsp;67, patrolling for Japanese vessels and escorting convoys to Guadalcanal as that campaign ground on into February.{{sfn|DANFS}} She was present as part of the distant support for the convoy operation that resulted in the [[Battle of Rennell Island]] on 29–30 January, but TF&nbsp;64 was too far south to come to the aid of TF&nbsp;18 during the action.{{sfn|Frank|pp=577–578}} On 11 February, the submarine {{ship|Japanese submarine|I-18||2}} attempted to torpedo ''Helena'' while cruising off Espiritu Santo, but the cruiser's escorting destroyers, ''Fletcher'' and ''O'Bannon'', sank the submarine with assistance from one of ''Helena''{{'}}s Seagull floatplanes. ''Helena'' thereafter went to Sydney, Australia, on 28 February, arriving there on 6 March for an overhaul. She was taken to the [[Sutherland Dock]] in the [[Cockatoo Island Dockyard]] on 15 March for repair work that lasted two days. She then got underway on 26 March to return north to Espiritu Santo to resume bombardment operations against New Georgia as part of what was now designated TF&nbsp;68.{{sfn|Whitley|p=253}}{{sfn|Domagalski|pp=35–36}}{{sfn|Wright|p=36}}

''Helena'' arrived in Espiritu Santo on 30 March and rejoined Ainsworth's unit. As the preparations for the New Georgia campaign increased, the ships made repeated patrols into the Slot. Ainsworth's cruisers were also occupied with extensive training for the upcoming operations. While off Guadalcanal refueling from a tanker, ''Helena'' received instructions to get underway as quickly as possible, as a large Japanese airstrike was detected on radar. She and the rest of the cruiser unit steamed to the northwest of Savo Island to avoid the raid; they escaped damage, but the attack forced the Americans to cancel the planned cruiser patrol that night. On the night of 12–13 May, Ainsworth took his cruisers to shell Vila and Munda. ''Helena'' was tasked with bombarding the former and she fired a total of 1,000&nbsp;shells at the island during the attack.{{sfn|Domagalski|pp=40–42}}

The invasion of New Georgia began on 30 June; ''Helena'' and the rest of TF&nbsp;68 patrolled at the northern end of the [[Coral Sea]]; at that time, she cruised with ''St. Louis'', ''Honolulu'', and their escorting destroyer screen that consisted of ''O'Bannon'', {{USS|Nicholas|DD-449|2}}, {{USS|Chevalier|DD-451|2}}, and {{USS|Strong|DD-467|2}}. By 1 July, the ships were about {{cvt|300|nmi}} south of New Georgia, and on 3 July they reached [[Tulagi]], where a false report of a Japanese airstrike briefly sent the ships' crews to their battle stations. The Allied plan called for a second landing on New Georgia in the Kula Gulf on the northeastern side of the island. A landing here would block the resupply route for the Japanese forces fighting on the island and it would also deny their use of the gulf to escape once they were defeated, as they had done on Guadalcanal.{{sfn|Domagalski|pp=45–47}}

=====Landing at Rice Anchorage=====
[[File:USS Helena, St. Louis, and Honolulu underway 80-G-57074.jpg|thumb|''Helena'' (right) underway with ''St. Louis'' (left) and ''Honolulu'' (center, behind ''Helena'') in June 1943]]

Having attacked the Japanese positions around the Kula Gulf on several occasions, Ainsworth knew that the Japanese would be expecting further attacks as the New Georgia campaign got underway. He instructed the cruiser commanders to expect Japanese naval forces to intervene, to be prepared to evacuate damaged ships, and if necessary, to beach badly damaged vessels in the Rice Anchorage. On 4 July, the American invasion force—assault troops loaded aboard destroyer transports—departed Tulagi at 15:47, with ''Honolulu'' in the lead, followed by ''St Louis'' and ''Helena''. The four destroyers took up positions around them to screen for submarines, while the destroyer transports sailed independently. At the same time, a group of three Japanese destroyers, {{ship|Japanese destroyer|Niizuki||2}}, {{ship|Japanese destroyer|Yūnagi|1924|2}}, and {{ship|Japanese destroyer|Nagatsuki|1926|2}}, left [[Bougainville Island|Bougainville]] with a contingent of 1,300&nbsp;infantry aboard to reinforce the garrison on New Georgia.{{sfn|Domagalski|pp=48–49}}

''Nicholas'' and ''Strong'' reached Kula Gulf first, scanning it with their radar and [[sonar]] sets to determine if any Japanese warships were in the area. The cruisers and other two destroyers then entered the gulf to prepare to bombard Japanese positions at Vila. ''Honolulu'' opened fire first 00:26 on 5 July and Cecil ordered ''Helena''{{'}}s gunners to follow suit ninety seconds later. Black Cats circling overhead coordinated the ships' fire. The other vessels quickly joined in the bombardment, which lasted about fourteen minutes before the American column turned east to move to the Rice Anchorage to shell targets there. After six minutes of shooting, the ships departed, ''Helena'' having fired over a thousand rounds of 6- and 5-inch shells in the two bombardments. During the latter period, ''Helena''{{'}}s crew noted shell splashes from Japanese artillery batteries near the ship, but none of the American vessels were hit. Unbeknownst to the Americans, the three Japanese destroyers had arrived in the gulf while they were still shooting. Illuminated by the gun flashes, the American vessels were quickly identified by the Japanese over {{cvt|6|nmi}} away.{{sfn|Domagalski|pp=49–50, 52–53}}

[[File:USS Helena CL-50-700px.jpg|thumb|left|''Helena'' in the South Pacific, 1943]]

The transport group then entered the gulf and steamed close to the shore to prevent intermingling with Ainsworth's squadron, which had turned north at 12:39 to leave the gulf. Captain Kanaoka Kunizo, the senior destroyer commander in charge of the reinforcement operation, decided to withdraw as well to avoid engaging a superior force with his ships loaded with soldiers and supplies. ''Niizuki'', the only radar-equipped destroyer, directed the aim of all three vessels, which launched a total of fourteen [[Long Lance]] torpedoes before withdrawing at high speed to escape back to Bougainville. One of these torpedoes struck ''Strong'', which was still stationed at the entrance of the gulf on sentry duty. The destroyer was fatally damaged, but the attack alerted Ainsworth that there were Japanese warships in the area. ''O'Bannon'' and ''Chevalier'' were detached to pick up survivors while Ainsworth prepared to search for the submarine he assumed to have been responsible, as none of his ships had detected the three Japanese destroyers on their radars. ''Strong'' sank at 01:22, with 239 of her crew taken off by the other destroyers, though some additional survivors were missed in the darkness and were later picked up by the transport group. Ainsworth's ships then resumed their cruising formation at 02:15 for the voyage back to Tulagi.{{sfn|Domagalski|pp=53–57}}

During the bombardment, the shell hoist for the left gun in turret No. 5 broke down, while propellant cases repeatedly jammed in turret No. 2; work on the turrets began immediately as the vessels steamed back to Tulagi. The ammunition hoist was quickly restored to working order, but the gun in turret No. 2 took more than five hours of work before the jammed case could be removed and replaced with a modified short case that allowed the shell that was still in the gun to be fired, clearing it for normal use. At 07:00, the destroyer {{USS|Jenkins|DD-447|2}} joined the squadron, which reached Tulagi in the early afternoon, where the ships immediately began refueling. Shortly thereafter, Ainsworth received orders from Halsey to return to Kula Gulf, as reconnaissance aircraft had spotted Japanese destroyers departing from Bougainville to attempt the planned reinforcement run that he had inadvertently disrupted the night before. Ainsworth was to intercept the destroyers and prevent the landing of more Japanese forces on the island. He ordered the ships to end refueling and prepare to get underway; ''Jenkins'' replaced ''Strong'' and the destroyer {{USS|Radford|DD-446|2}} took the place of ''Chevalier'', which had been damaged in an accidental collision with the sinking ''Strong''.{{sfn|Domagalski|pp=61–63}}

=====Battle of Kula Gulf=====
[[File:USS Helena (CL-50) firing during the Battle of Kula Gulf, 6 July 1943 (80-G-54553).jpg|thumb|''Helena'' in action at Kula Gulf, seen from the light cruiser {{USS|Honolulu|CL-48|2}}. Note: Bright flashes of gunfire are due to use of older gunpowder for the main armament. These flashes gave the Japanese a target for their torpedoes.]]

{{main|Battle of Kula Gulf}}

Since the previous night's reinforcement run had been aborted, the Japanese assembled a group of ten destroyers to make a larger effort the next night. ''Niizuki''—now the flagship of Rear Admiral [[Teruo Akiyama]]—and the destroyers {{ship|Japanese destroyer|Suzukaze||2}} and {{ship|Japanese destroyer|Tanikaze|1940|2}} were to escort the other seven destroyers—''Nagatsuki'', {{ship|Japanese destroyer|Mochizuki|1927|2}}, {{ship|Japanese destroyer|Mikazuki|1926|2}}, {{ship|Japanese destroyer|Hamakaze|1940|2}}, {{ship|Japanese destroyer|Amagiri|1930|2}}, ''Hatsuyuki'', and {{ship|Japanese destroyer|Satsuki|1925|2}}—carried 2,400&nbsp;troops and supplies. Meanwhile, the American force intending to block their advance had formed up by 19:30 and began the voyage back up the Slot. As the Americans steamed toward Kula Gulf, the crews got their vessels ready for action, including closing all of the watertight doors to reduce the risk of flooding and turning off all lights to prevent detection by the Japanese.{{sfn|Domagalski|pp=65–67}}

The American squadron passed Visuvisu Point at the entrance to the gulf early on 6 July, at which point the vessels reduced speed to {{convert|25|kn}}. Visibility was poor owing to heavy cloud cover. Ainsworth had no information as to the specific composition or location of the Japanese force, and patrolling Black Cats could not detect them in the conditions. The Japanese destroyers had already entered the gulf and begun unloading their cargoes; ''Niizuki'' detected the American ships on her radar at 01:06 at a range of about {{cvt|13|nmi}}. Akiyama took his flagship, ''Suzukaze'', and ''Tanikaze'' to observe the Americans at 01:43 while the other destroyers continued to disembark the soldiers and supplies; by that time, Ainsworth's ships had already detected the three ships off Kolombangara at 01:36. As the two sides continued to close, Akiyama recalled the other destroyers to launch an attack. The American vessels transitioned into a [[line ahead]] formation, with ''Nicholas'' and ''O'Bannon'' ahead of the cruisers; the line turned left to close the range to the Japanese vessels before turning right to move toward an advantageous firing position.{{sfn|Domagalski|pp=67–68, 71}}

The American radars picked up Akiyama's escort detachment along with another group of destroyers that was racing to join him; Ainsworth decided to attack the first group and then turn about to engage the second. At about 01:57, the American vessels opened up with radar-directed rapid fire. Between the three cruisers, they fired around close to 1,500&nbsp;shells from their 6-inch batteries in the span of just five minutes. ''Helena'' quickly expended the flashless propellant charges that had been kept after the previous night's bombardment mission, thereafter transitioning to normal smokeless propellant, which created large flashes every time the guns fired. ''Helena'' initially targeted the leading destroyer—''Niizuki''—with her main battery while her 5-inch guns engaged the following vessel. ''Niizuki'' also received heavy fire from the other American ships and was quickly sunk, taking Akiyama down with her. ''Helena'' then shifted fire to the next closest vessel, but by that time, ''Suzukaze'' and ''Tanikaze'' had both launched eight torpedoes at the American line. They then fled to the northwest, using heavy smoke to conceal themselves while their crews reloaded their torpedo tubes. Both destroyers received minor hits during their temporary withdrawal but were not seriously damaged.{{sfn|Domagalski|pp=74–78}}

[[File:Torpedo damage plan of USS Helena (CL-50) in the Battle of Kuly Gulf, 6 July 1943 (C l5001).jpg|thumb|US Navy damage report drawing of the torpedo damage to ''Helena'']]

Ainsworth instructed his ships to turn to the right at 02:03 to begin engaging the second group of destroyers, but shortly thereafter three of ''Suzukaze''{{'}}s or ''Tanikaze''{{'}}s torpedoes struck ''Helena'' on the port side, inflicting serious damage. The first torpedo hit about {{cvt|150|ft}} from the bow, abreast of the forward-most turret about {{cvt|5|ft}} below the [[waterline]]. It caused a major explosion that may have been the result of a magazine detonation. The blast destroyed the No. 1 turret, tore open the hull almost to the keel, and severed the bow from the rest of the hull. The rest of the hull began to flood as the force of the blast collapsed bulkheads below turret No. 2. But even after the severe damage inflicted by the first torpedo, the aft main guns continued to fire, and the ship had not yet been fatally damaged. She remained able to steam at 25&nbsp;knots despite the increased drag.{{sfn|Domagalski|pp=78, 85–87}}

Two minutes after the first torpedo hit, the second and third torpedoes struck the ship in quick succession, much lower in the hull than the first had hit, as much as {{cvt|15|ft}} below the waterline. This was below where the ship's belt armor might have reduced the scale of damage inflicted. These hit further aft in the machinery spaces, breaking the keel, flooding the forward engine and boiler rooms, and breaching bulkheads that allowed water into the aft engine room. The flooding disabled the ship's engines and left her immobilized and without electrical power. Another gaping hole had been blasted into the hull, which exacerbated the flooding caused by the first hit. It quickly became clear that ''Helena'' would not be able to survive these hits, and two minutes after the third hit, Cecil gave the order to abandon ship. He remained on the bridge with a signalman who attempted to flash a distress message with a [[signal lamp]] to no avail. Cecil then ordered another man to dump classified documents overboard before he ordered those still on the bridge to evacuate as well.{{sfn|Domagalski|pp=87–89}}

[[File:“Avenge Montana’s GLORIOUS ‘HELENA’ buy WAR BONDS to replace her! 3rd War Loan” 1943 poster - USS Helena-CL-50-War-Bond-1943 (cropped).jpg|thumb|1943 [[war bond]]s poster commemorating ''Helena'']]

With the keel having been broken by the second and third hit, the [[girder]]s that supported the hull structure began to buckle, collapsing the entire structure amidships and breaking the hull in half. The center third of the ship quickly sank but the bow and stern remained afloat for some time before flooding caused them both to point upward as they filled with water. Ainsworth and the other vessels' captains were not immediately aware that ''Helena'' had been disabled owing to the course change, the general confusion that resulted from heavy smoke and gunfire during the battle, and the fact that most attention was directed at the oncoming second group of Japanese destroyers. In the ensuing action, several of the Japanese destroyers were hit and forced to disengage, after which Ainsworth attempted to reorganize his force at around 02:30. He quickly realized that ''Helena'' was not responding to radio messages and ordered his ships to begin searching for the missing cruiser. At 03:13, ''Radford''{{'}}s radar picked up a contact some {{cvt|5000|yd}} away. The destroyer closed with it and confirmed it was ''Helena''{{'}}s bow pointing up, out of the water.{{sfn|Domagalski|pp=78–83, 89–90}}

=====Survivors=====
[[File:USS Radford (DD-446) steaming into Tulagi Harbour with 468 survivors form USS Helena (CL-50) on 6 July 1943.jpg|thumb|''Radford'' steaming into Tulagi with 444 men from ''Helena'' aboard]]

Ainsworth ordered ''Radford'' to immediately begin the search for survivors and shortly thereafter instructed ''Nicholas'' to join the rescue operation. Ainsworth ordered the destroyers to proceed to the [[Russell Islands]] by dawn to avoid being attacked by Japanese aircraft. The remaining pair of destroyers screened ''Honolulu'' and ''St. Louis'' as they withdrew to avoid the possibility of a retaliatory Japanese air attack. Nearly a thousand men were in the water, clinging to life rafts and waiting to be picked up by the destroyers, which reached the men at 03:41. Some men had brought flashlights when they abandoned ''Helena'' to signal their position to the destroyers. As the destroyers moved into position, their crews hung nets over the sides for survivors to climb. But shortly after the rescue effort began, ''Nicholas''{{'}} radar operators detected a contact approaching at high speed; both she and ''Radford'' broke off the rescue operation to prepare to engage ''Suzukaze'' and ''Tanikaze'', both of which had turned northwest to reload their tubes after torpedoing ''Helena''. They had returned southeast to search for ''Niizuki'' but after failing to locate her, they withdrew, having come within {{cvt|13000|yd}} of ''Nicholas''.{{sfn|Domagalski|pp=103–108}}

With the Japanese destroyers having departed, ''Nicholas'' and ''Radford'' returned to resume rescue operations at 04:15. The destroyers lowered their [[whaleboat]]s to assist with the search for survivors. At 05:15, the destroyers' radar sets picked up ''Amagiri'' approaching; the latter was also searching for ''Niizuki'' when lookouts spotted the two American destroyers. ''Amagiri'' turned to engage as ''Nicholas'' and ''Radford'' did the same. ''Nicholas'' and ''Amagiri'' launched torpedoes at each other before closing and engaging with guns before ''Amagiri'' broke off and disengaged to the west. During the short engagement, the whaleboats continued to search for ''Helena'' survivors. At around 06:00, the destroyers had returned, but another radar contact—''Mochizuki''—again prompted their departure. A short skirmish at long range produced no results apart from further delaying rescue operations. In light of Ainsworth's order to avoid being caught by Japanese aircraft and with daylight fast approaching, ''Nicholas'' and ''Radford'' withdrew, leaving four of their whaleboats behind to help ferry men to American positions on New Georgia. In the course of the night's operations, ''Nicholas'' had picked up 291 while ''Radford'' had rescued 444.{{sfn|Domagalski|pp=108–109, 112–114, 116–118}}

Cecil, who had survived the sinking and refused to be pulled aboard one of the destroyers, instead took command of the whaleboats that remained behind. He supervised the loading of three of the boats (the fourth had broken its rudder and was of little use) to ensure that none became overloaded and [[capsize]]d, and directed their route out of the gulf. Each whaleboat pulled a raft. Cecil sought to bring the flotilla away from Japanese-occupied Kolombangara to avoid drawing enemy fire. After sailing for much of the day, the boats finally reached a beach thought to be near American lines, so the boats got as close to shore as they could and the men waded ashore. They had landed at [[Menakasapa]], a small peninsula on the northwestern side of New Georgia, some seven miles north of American lines. The men remained there overnight, as it was too late to try to pass through the dense jungle. In the meantime, another pair of destroyers, {{USS|Woodworth||2}} and {{USS|Gwin|DD-433|2}} arrived in Kula Gulf to search for survivors from ''Helena'' early on the morning of 6 July. They combed the waters at the mouth of the gulf before observers aboard the destroyers spotted the men on the beach. ''Gwin'' sailed as close to the beach as she could get at 07:45, while ''Woodworth'' covered her approach. After setting fire to the whaleboats, the ''Helena'' survivors—88&nbsp;men in total—were picked up by ''Gwin'' and arrived back in Tulagi at 15:20 that day.{{sfn|Domagalski|pp=119–125}}

[[File:NewGeorgiaGroupCloseup.png|thumb|left|Map of the New Georgia island group showing New Georgia, Kolombangara, and Vella Lavella|upright=1.5]]
A significant number of men were still in the water; some life rafts remained in the area, while a number of men had climbed onto the still-floating bow or clung to pieces of floating wreckage. A [[B-24 Liberator]] [[heavy bomber]] passed the area at low altitude to search for survivors and its pilot reported seeing the men who had climbed aboard the floating bow along with other groups in the water. The bomber also dropped three life rafts, one of which sank. The survivors were subjected to brutal conditions while at sea: few provisions, no shelter from the sun, and no warmth at night when temperatures plummeted. As the day wore on, a group of about 50&nbsp;men took two rafts in an attempt to reach Kolombangara, but the current proved to be too strong for them to overcome. As the day wore on, the groups of men began to drift apart; the men in one of the rafts rigged an improvised sail in an attempt to reach [[Vella Lavella]], the next island to the west of Kolombangara. Other groups of men were pulled there by the current; as the men reached the [[coral reef]] that surrounded the island on 8 July, they were met by locals who helped pull the men to shore and put them in contact with the [[coastwatcher]] station.{{sfn|Domagalski|pp=133–134, 139–145, 150–152}}

The coastwatchers organized a relief effort to bring the men inland to avoid the Japanese garrison and the patrols that routinely swept the coastal areas. The Solomon Islanders gathered the groups of men as they made landfall over the course of late 7 to early 8 July and took some of them—104 in total—to the house of a Chinese merchant in the interior of the island. Others were collected at two different points on the island to hide the men from the Japanese; these two groups numbered 50 and 11, respectively. The coastwatchers contacted their superior on Guadalcanal and informed him of the situation on the island. Turner's staff there immediately began making plans to launch a rescue operation, though the number of men to be retrieved from an enemy-occupied island complicated the effort, as the typical methods, via [[submarine]] or [[PT boat]], would not be able to accommodate the 165&nbsp;men on Vella Lavella. They settled on using a pair of destroyer transports to evacuate the men, escorted by eight destroyers. Allied naval forces had not yet penetrated as far as Vella Lavella during the campaign, which brought them dangerously close to strong Japanese naval and air forces.{{sfn|Domagalski|pp=152–156, 159–162, 175, 178–179}}

The plan called for the two smaller groups, both of which were located further north than the main group, to meet inland and proceed to the coast where they would signal the waiting transports. The main group of survivors would proceed to a different evacuation point. The operation was initially planned for 12 July, but reports that Japanese vessels were operating in the area forced a postponement until the night of 15 July (and led to the [[Battle of Kolombangara|Second Battle of Kula Gulf]]). Four destroyers took up a defensive position to the northwest to block a possible attack by Japanese forces while the rest of the force steamed to the south of Kolombangara and then north through the [[Vella Gulf]]. At 01:55 on 16 July, the men flashed the recognition signal to the waiting transports, which lowered three [[Higgins boat]]s to ferry the men to the vessels. Along with the ''Helena'' survivors, the boats evacuated a downed American pilot and a captured Japanese pilot before the units moved south to the other evacuation point. Again the Higgins boats ferried the group to the transports, along with several Chinese merchants and their families. The flotilla arrived back in Tulagi that afternoon and disembarked the survivors, who were then transferred to the [[French colonial empire|French colony]] of [[New Caledonia]], where they met the men who had been pulled from the water on the night of the sinking. Out of a crew of almost 1,200, 168&nbsp;men were killed, either during the battle or while the men were adrift.{{sfn|Domagalski|pp=102, 179–189, 193–195}}

==Aftermath==
A memorial was erected in [[Helena, Montana]] to commemorate both cruisers named ''Helena'', CL-50 and {{USS|Helena|CA-75|1}}, including artifacts from both vessels.{{sfn|Hanson}}

The wreck was discovered on 11 April 2018 by the [[research ship]] {{ship|RV|Petrel}}, operated by [[Paul Allen]] during an expedition to the Solomons to search for the wrecks of warships sunk during the fighting there. Allen confirmed the identity of the wreck through the [[hull number]] still visible on the stern. The wreck lies at a depth of about {{cvt|860|m|ft|order=flip}}.{{sfn|Hanson}}

==Footnotes==
===Notes===

{{notelist}}

===Citations===

{{reflist|20em}}

==References==
* {{cite book
  |last=Bonner
  |first=Kermit
  |title=Final Voyages
  |year=1996
  |publisher=Turner Publishing Company
  |location=Paducah
  |isbn= 978-1-56311-289-8
  |ref={{sfnRef|Bonner}}
  }}
* {{Cite book
  | last = Cook
  | first = Charles O.
  | year = 1992  
  | title = The Battle of Cape Esperance: Encounter at Guadalcanal
  | publisher = Naval Institute Press
  | location = Annapolis
  | isbn = 978-1-55750-126-4
  |ref={{sfnRef|Cook}}
  }}
* {{cite book
  | last = Domagalski
  | first = John J.
  | year = 2012
  | title = Sunk in Kula Gulf: The Final Voyage of the USS Helena and the Incredible Story of Her Survivors in World War II
  | publisher = Potomac Books Inc
  | isbn = 978-1-59797-839-2
  | ref={{sfnRef|Domagalski}}
  }}
* {{cite book
  |last=Frank
  |first=Richard B.
  |title=Guadalcanal: The Definitive Account of the Landmark Battle
  |publisher=Penguin Books
  |year=1990
  |location=Marmondsworth
  |isbn=978-0-14-016561-6
  |ref={{sfnRef|Frank}}
  |url=https://archive.org/details/guadalcanal00rich
  }}
* {{cite book
  | last=Friedman
  | first=Norman
  | chapter=United States of America
  | pages=86–166
  | editor1-last = Gardiner
  | editor1-first = Robert
  | editor2-last = Chesneau
  | editor2-first = Roger
  | year = 1980
  | title = Conway's All the World's Fighting Ships 1922–1946
  | location = Annapolis
  | publisher = Naval Institute Press
  | isbn = 978-0-87021-913-9
  | ref = {{sfnRef|Friedman 1980}}
  |name-list-style=amp
  }}
* {{cite book
  |last=Friedman
  |first=Norman
  |title=U.S. Cruisers: An Illustrated Design History
  |publisher=US Naval Institute Press
  |location=Annapolis
  |year=1984
  |isbn=978-0-87021-718-0
  |ref={{sfnRef|Friedman 1984}}
  }}
* {{cite news
  |last=Hanson
  |first=Amy Beth
  |url=https://helenair.com/news/state-and-regional/nearly-years-after-uss-helena-was-sunk-its-wreckage-has/article_9f17b136-9a24-51db-b225-ac3302434fa6.html#7
  |title=Nearly 75 Years After USS Helena Was Sunk, Its Wreckage Has Been Found
  |newspaper=[[Independent Record]]
  |agency=Associated Press
  |date=18 April 2018
  |access-date=13 August 2019
  |ref={{sfnRef|Hanson}}
  }}
* {{cite book
  | last = Hammel
  | first = Eric
  | author-link = Eric M. Hammel
  | year = 1988
  | title = Guadalcanal: Decision at Sea: The Naval Battle of Guadalcanal, November 13–15, 1942
  | publisher = Pacifica Press
  | location = New York
  | isbn = 978-0-517-56952-8
  | ref = {{sfnRef|Hammel}}
  | url = https://archive.org/details/guadalcanaldecis00hamm
  }}
* {{cite DANFS
  | title = Helena II (CL-50)
  | url = https://www.history.navy.mil/research/histories/ship-histories/danfs/h/helena-cl-50-ii.html
  | access-date =18 July 2019
  | date = 25 October 2005
  | ref = {{sfnRef|DANFS}}
  }}
* {{cite book
  | last = Hornfischer
  | first = James D.
  | year = 2011
  | title = Neptune's Inferno: The U.S. Navy at Guadalcanal
  | publisher = Bantam Books
  | location = New York
  | isbn = 978-0-553-80670-0
  | ref = {{sfnRef|Hornfischer}}
  | url = https://archive.org/details/neptunesinferno00jame
  }}
* {{cite book
  | last = Kilpatrick
  | first = C. W.
  | year = 1987
  | title = The Naval Night Battles of the Solomons
  | publisher = Exposition Press
  | isbn = 978-0-682-40333-7
  |ref={{sfnRef|Kilpatrick}}
  }}
* {{cite book
  | last = Morison
  | first = Samuel Eliot
  | author-link = Samuel Eliot Morison
  | year = 1958
  | chapter = The Naval Battle of Guadalcanal, 12–15 November 1942
  | title = The Struggle for Guadalcanal, August 1942 – February 1943'', vol.&nbsp;5 of ''[[History of United States Naval Operations in World War II]]
  | publisher = [[Little, Brown and Company]]
  | location = Boston
  | isbn = 978-0-316-58305-3
  |ref={{sfnRef|Morison}}
  }}
* {{cite book
  | author = Naval Historical Division
  | title = Dictionary of American Naval Fighting Ships
  | volume = I
  | year = 1959
  | location = Washington
  | publisher = Naval History Division
  | oclc = 627492823
  | ref = {{sfnref|Naval Historical Division}}
  }}
* {{cite book
  | last = Rohwer
  | first = Jürgen
  | author-link = Jürgen Rohwer
  | year = 2005
  | title = Chronology of the War at Sea, 1939–1945: The Naval History of World War Two
  | publisher = Naval Institute Press
  | location = Annapolis
  | isbn = 978-1-59114-119-8
  | ref = {{sfnRef|Rohwer}}
  }}
* {{cite book
  | last = Silverstone
  | first = Paul
  | title = The Navy of World War II, 1922–1947
  | year = 2012
  | publisher = Routledge 
  | location = New York
  | isbn = 978-1-283-60758-2
  | ref = {{sfnref|Silverstone}}
  }}
* {{cite book
  | last = Terzibaschitsch
  | first = Stefan
  | title = Cruisers of the US Navy 1922–1962
  | year = 1988 
  | publisher = Naval Institute Press 
  | location = Annapolis
  | isbn = 978-0-87021-974-0
  | ref = {{sfnref|Terzibaschitsch}}
  }}
* {{cite web
  |url=https://www.history.navy.mil/content/history/nhhc/research/archives/digitized-collections/action-reports/wwii-pearl-harbor-attack/ships-d-l/uss-helena-cl-50-action-report.html
  |title=USS Helena, Report of Pearl Harbor Attack
  |access-date=18 July 2019
  |date=20 February 2018
  |ref={{sfnRef|Helena Report}}
  |publisher=Naval History and Heritage Command
  |website=history.navy.mil
  }}
* {{cite book
  | last = Whitley
  | first = M. J.
  | title = Cruisers of World War Two: An International Encyclopedia
  | publisher = Arms and Armour Press
  | year= 1995
  | location = London
  | isbn = 978-1-85409-225-0
  |ref={{sfnRef|Whitley}}
  }}
* {{cite journal
  | last = Wright
  | first = Christopher C.
  | year = 2019
  | title = Answer to Question 1/56
  | journal = Warship International
  | volume = LVI
  | issue = 1
  | pages = 22–46
  | issn = 0043-0374
  |ref={{sfnRef|Wright}}
  |location=Toledo
  |publisher=[[International Naval Research Organization]]
  }}
* {{cite book
  |last=Zimm
  |first=Alan D.
  |title=Attack on Pearl Harbor: Strategy, Combat, Myths, Deceptions
  |year=2011
  |location=Havertown
  |publisher=[[Casemate Publishers]]
  |isbn=978-1-61200-010-7
  |ref={{sfnRef|Zimm}}
  }}

==Further reading==
*{{Cite book | last = Anderson | first = Paul O., CDR USNR | year = 1944 | title = "One Damned Fight After Another": The Combat Record of the USS Helena From Dec. 7, 1941 to July 6, 1943 | oclc = 41758996 }}

==External links==
{{commons category|USS Helena (CL-50)}}
*{{navsource|04/050/04050|USS Helena}}

{{Brooklyn class cruiser}}
{{July 1943 shipwrecks}}

{{DEFAULTSORT:Helena (CL-050)}}
[[Category:Brooklyn-class cruisers]]
[[Category:Ships built in Brooklyn]]
[[Category:1938 ships]]
[[Category:World War II cruisers of the United States]]
[[Category:Ships present during the attack on Pearl Harbor]]
[[Category:World War II shipwrecks in the Pacific Ocean]]
[[Category:Maritime incidents in July 1943]]
[[Category:Shipwreck discoveries by Paul Allen]]
[[Category:2018 archaeological discoveries]]