Ahven class submarine

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Image:Ahven

Ahven-class Submarine
Class overview
Name Ahven-class Submarine
Builders Telakka N:o 124 Proletariaatti, Uusilinna
Planned 6
Built 6
Destroyed 1
Scrapped 5
General Characteristics
Type Submarine
Displacement
  • 416 long tons (423 t) surfaced
  • 482 long tons (490 t) submerged
Length 41 metres (135 ft)
Beam 3.7 metres (12 ft)
Draught 4.9 metres (16 ft)
Propulsion
  • 2 × gasoline engine(400 bhp (300 kW))
  • 2 × electric motor (200 hp (150 kW))
Speed
  • 8.4 knots (15.6 km/h; 9.7 mph) (surfaced)
  • 7.5 knots (13.9 km/h; 8.6 mph) (submerged)
  • Range
  • 750 nmi (1,390 km; 860 mi) at 8 kt
  • Test depth 27 m
    Complement 34
    Armament
    • 2 bow, 2 stern 18-inch (457 mm) torpedo tubes
    • 2 37mm guns


    Development

    After completing the Hai class submarines, LTN felt that the fleet needed submarines with far greater capability and range. Therefore the follow-on class was intended to be larger, 400t design with improved seaworthiness. In all respect, the emerging Ahven was the first true combat capable submarine in TTPL service.

    Ships in class

    Name Builder Laid down Launch Date Entered Service Fate
    Ahven Telakka N:o 124 Proletariaatti, Uusilinna October 1905 July 1907 October 1908 Scrapped in 1918
    Kuha Telakka N:o 124 Proletariaatti, Uusilinna December 1905 May 1907 October 1909 Scrapped in 1918
    Karppi Telakka N:o 124 Proletariaatti, Uusilinna December 1905 May 1907 October 1909 Scrapped in 1918
    Taimen Telakka N:o 124 Proletariaatti, Uusilinna March 1906 August 1907 April 1910 Sunk in 1915
    Silli Telakka N:o 124 Proletariaatti, Uusilinna March 1906 August 1907 April 1910 Scrapped in 1918
    Silakka Telakka N:o 124 Proletariaatti, Uusilinna March 1906 September 1907 May 1910 Scrapped in 1918

    Service history

    Minor modifications between 1914-15, plans to replace the gasoline engines with diesel engines were canceled at the outbreak of the Great War. Taimen was sunk in 1915 in the battle of Woiche Straits.

    See Also

    Ships of Workers' and Peasants' Red Fleet 1883-1922