HNoMS Tyr (N50)

Class overview
Builders	Voldnes Skipsverft, Ålesund
Operators	Royal Norwegian Navy
Preceded by	KNM Borgen
In commission	1
Planned	1
Building	1
General characteristics
Displacement	735 tons full load
Length	42,5m
Beam	10,0m
Draft	6,5m
Propulsion	2 x Deutch BA 12M816
Speed	12 knots
Complement	20
Armament	M2HB MG

KNM Tyr is used for underwater search and recovery by the Royal Norwegian Navy.

History

Tyr was built at Voldnes Skipsverft in 1981, she was used as a offshore standby-ship in the North Sea under the name M/S Sandby Master. The Royal Norwegian Navy took over the ship in 1993, Tyr went through an comprehensive rebuilding and modernization program between 1994 and february, 1995 at Mjellem og Karlsen shipyard in Bergen. Under the rebuilding Tyr was equipped with new thrusters, the bridge was expanded and an mine hangar was built on the aft-deck, new hydraulic equipment was installed on the work-deck. Tyr had installed tactical systems, and was equipped with an Scorpio 21 ROV. The furnishings were also modernized.

Wreck Discovery and Recovery

HNoMS Tyr have discovered and recovered several war wrecks:

Localization and filming of the German battlecruiser Scharnhorst in cooperation with NRK.
Localization and filming of the German u-boat U864, that was sunk west of Fedje in 1945.
Localization and filming of the Polish troop-transport ship Chroby that was sunk in the Vestfjorden in 1940.
Localization and filming of the Norwegian costal-express-ship that was sunk in the Vestfjorden in 1940.