Finnish submarine Iku-Turso

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Career (Finland)

Name:	Iku-Turso
Ordered:	4 March 1927
Builder:	Crichton-Vulcan
Laid down:	1927
Launched:	5 May 1931
Commissioned:	13 October 1931
Decommissioned:	1946
Fate:	Scrapped 1950s
General characteristics
Displacement:	493 tonnes surfaced, 716 tonnes submerged
Length:	63.5 metres (208.3 ft)
Beam:	6.2 metres (20.3 ft)
Draft:	3.6 metres (11.8 ft)
Propulsion:	Diesel-electric, 1,016 hp
Speed:	12.6 knots surfaced, 8.5 knots submerged
Range:	1,575 nm at 10 knots surfaced, 75 nm at 4 knots submerged
Complement:	30 men
Armament:	4 x 533 mm torpedo tubes, 2 bow, 2 stern (6 torpedoes) 1 x 76 mm/48 Bofors 1 x 20 mm/60 Madsen 1 x 12.7 mm

Iku-Turso was a Finnish 500 tonne Vetehinen class submarine that was launched in May 1931 and who served in the Finnish Navy during the second World War. It was named after Finnish god, Iku-Turso. Built by "Crichton-Vulkan" in Turku according to project developed by "Ivs" [improved project of German UB-III]. Scrapped in 1953. Unsuccessfully attacked Soviet submarine Shch-307 during the Continuation War [27.10.1942]. Despite the fact that Soviet submarine detected and avoided Finnish torpedoes by manoeuvring (and that was documented in combat report of Shch-307 which corresponds well in details with combat report of Iku-Turso from the same day) many sources still describe the untrue statement that Iku-Turso sank Shch-320 (who exploded on mine in the beginning of October and had differ assigned position) during that attack. The origin of such incorrect info was the detection of strong explosion of his torpedoes by Finnish captain who believed the target was hit^[1]