Monni class submarine

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Image:Monni

Monni-class Submarine
Class overview
Name Monni-class Submarine
Builders Telakka N:o 136 Enemmistöläinen, Kaukaa
Planned 1
Built 1
Scrapped 1
General Characteristics
Type Submarine
Displacement
  • 300 long tons (300 t) surfaced
  • 356 long tons (362 t) submerged
Length 27.7 metres (91 ft)
Beam 4.6 metres (15 ft)
Draught 3.66 metres (12.0 ft)
Propulsion
  • 2 × gasoline engine(150 bhp (110 kW))
  • 2 × electric motor (75 hp (56 kW))
Speed
  • 9 knots (17 km/h; 10 mph) (surfaced)
  • 9 knots (17 km/h; 10 mph) (submerged)
  • Range
  • 3,000 nmi (5,600 km; 3,500 mi)
  • Test depth 30,5 m
    Armament
    • 1 15-inch (381 mm) torpedotube
    • 28 or 35 mines


    Development

    Worlds first minelaying submarine. The concept was a brainchild of engineer M.I. Naletoinen, who was inspired the prospects of offensive naval mining which gained success in the Neuvosto-Bacl war in 1895. Naletoinen was advocating submarines with capacity to lay mines as early as in 1901 when the first operational submarine was decided to construct for the TTPL. Eventually Naletoinen's ideas were accepted at the Naval technical committee (LTN) and the experimental minelaying submarine was laid down in Kaukaa. The boat was named Monni (Catfish) and has cigar-shape with small superstructure above it. It carried special minetube in the rear by which it was supposed to lay mines.

    Ships in class

    Name Builder Laid down Launch Date Entered Service Fate
    Monni Telakka N:o 136 Enemmistöläinen, Kaukaa December 1905 May 1907 October 1909 Scrapped in 1918

    Service history

    Monni was completed in 1909 after lengthy trial period. In service it proved out to have several deflects and was not considered to be successful as a submarine. The underwater minelaying concept was however considered successful and Monni served as a prototype for series of mine laying submarines in TTPL and Neuvosto SML service.

    See Also

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