Finnish submarine Vetehinen

History
Finland
Name	Vetehinen
Ordered	16 September 1926
Builder	Ab Crichton-Vulcan Oy, Turku, Finland
Laid down	1926–27
Launched	1 June 1930
Commissioned	13 October 1930
Decommissioned	1946
Fate	Scrapped 1950s
General characteristics
Class and type	Vetehinen-class submarine
Displacement	493 tonnes surfaced, 716 tonnes submerged
Length	63.5 m (208.3 ft)
Beam	6.2 m (20.3 ft)
Draft	3.6 m (11.8 ft)
Propulsion	Polar Atlas Diesel-electric, 1,016 hp (758 kW) , ABB
Speed	12.6 knots (23.3 km/h; 14.5 mph) surfaced, 8.5 knots (15.7 km/h; 9.8 mph) submerged
Range	1,575 nmi (2,917 km; 1,812 mi) at 10 knots (19 km/h; 12 mph) surfaced, 75 nmi (139 km; 86 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Complement	30 men
Armament	4 × 533 mm torpedo tubes, 2 bow, 2 stern (6 torpedoes) 20 mines in vertical shafts 1 × 76 mm/48 Bofors 1 × 20 mm/60 Madsen 1 × 12.7 mm Added in 1942: Depth charge rack (4 depth charges)

Vetehinen was a 500-tonne Vetehinen-class submarine that was constructed in the early 1930s, which served in the Finnish Navy during the Second World War. The submarine was the first ship of its class of three submarines. The name vetehinen means "merman".