BPL 1911 g-class submarine

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BPL 1911 g-class Submarine
Class overview
Name BPL 1911 g-class Submarine
Operators Far Eastern Imperial Navy
Planned 36
Built 32
Building 4
General Characteristics
Type Submarine
Displacement
  • 621 tons surfaced
  • 994 tons submerged
Length 70.1 metres (230 ft)
Beam 6.5 metres (21 ft)
Draught 3.5 metres (11 ft)
Propulsion
  • 2 shafts
  • Diesel-electric propulsion
  • 4 diesel engines (2 per shaft)
Power
  • 640 hp (480 kW) (diesel)
  • 900 hp (670 kW) (electric)
    • Speed
  • 9.5 knots (17.6 km/h; 10.9 mph) surfaced
  • 11.5 knots (21.3 km/h; 13.2 mph) submerged
    • Range
  • 12 days, 3500 miles at 6.5 knots
  • 103 miles under water at 4 knots
    • Complement 47
    Armament


    Image:BPL 1911 g Image:BPL 1911 g Patch 2


    Development

    After the Far Eastern-Japanese war, the Imperial Navy begun massive fleet reconstruction program which was drafted after extensive studies of the war experience. One of the new emphasis in the building program was construction of submarines. To accompany the smaller coastal-submarines (LPL 1911 g), plans were made to introduce a proper ocean-going submarine as well. As with the coastal type, Far Eastern Empire turned for the help of the American company Electric boat co. for the development of the new submarine. Unlike with the coastal submarine, all units of the ocean-going submarine were to be build in Far Eastern shipyards. The boat were based on the Holland 31A design and it became the standard submarine type of the Far Eastern Imperial Navy.

    Characteristics

    Double-hull design with the hull separated by flat bulkheads into several compartments. Very similar to contemporary Russian "Narval"-class also based on the Holland-design. Initially these boats were to be powered by two large diesel engines, one per shaft but the lack of suitable engines forced to adopt 4 smaller domestic diesel engines. This led the boats to have somewhat low performance regarding surface speed particularly.

    Ships in class

    Patch 1
    Name Builder Laid down Launch Date Entered Service Fate
    PL-15 Witte & Stroganov, Dalny January 1912 April 1913 February 1914 Extant in 1920
    PL-16 Witte & Stroganov, Dalny January 1912 April 1913 October 1914 Extant in 1920
    PL-17 Witte & Stroganov, Dalny January 1912 April 1913 October 1914 Extant in 1920
    PL-18 Witte & Stroganov, Dalny February 1912 April 1913 February 1915 Extant in 1920
    PL-19 Witte & Stroganov, Dalny February 1912 May 1913 March 1915 Extant in 1920
    PL-20 Witte & Stroganov, Dalny March 1912 May 1913 March 1915 Extant in 1920
    PL-21 Witte & Stroganov, Dalny March 1912 June 1913 April 1915 Extant in 1920
    PL-22 Witte & Stroganov, Dalny March 1912 June 1913 April 1915 Extant in 1920
    PL-23 Witte & Stroganov, Dalny April 1912 July 1913 April 1915 Extant in 1920


    Patch 2
    Name Builder Laid down Launch Date Entered Service Fate
    PL-24 Port Artur Verf, Port Arthur April 1913 June 1914 September 1915 Extant in 1920
    PL-25 Port Artur Verf, Port Arthur May 1913 June 1914 September 1915 Extant in 1920
    PL-26 Port Artur Verf, Port Arthur June 1913 July 1914 September 1915 Extant in 1920
    PL-27 Port Artur Verf, Port Arthur July 1913 August 1914 October 1915 Extant in 1920
    PL-28 Port Artur Verf, Port Arthur August 1913 August 1914 November 1915 Extant in 1920
    PL-29 Port Artur Verf, Port Arthur September 1913 August 1914 December 1915 Extant in 1920
    PL-30 Port Artur Verf, Port Arthur October 1913 September 1914 January 1916 Extant in 1920
    PL-31 Port Artur Verf, Port Arthur November 1913 October 1914 February 1916 Extant in 1920
    PL-32 Tikhookeanskaya verf, Vladivostok February 1914 March 1915 May 1916 Extant in 1920
    PL-33 Tikhookeanskaya verf, Vladivostok March 1914 April 1915 June 1916 Extant in 1920
    PL-34 Tikhookeanskaya verf, Vladivostok April 1914 May 1915 July 1916 Extant in 1920
    PL-35 Tikhookeanskaya verf, Vladivostok May 1914 June 1915 August 1916 Extant in 1920
    PL-36 Tikhookeanskaya verf, Vladivostok June 1914 June 1915 September 1916 Extant in 1920
    PL-37 Tikhookeanskaya verf, Vladivostok July 1914 June 1915 September 1916 Extant in 1920
    PL-38 Tikhookeanskaya verf, Vladivostok August 1914 July 1915 October 1916 Extant in 1920
    PL-39 Tikhookeanskaya verf, Vladivostok September 1914 July 1915 October 1916 Extant in 1920


    Patch 3
    Name Builder Laid down Launch Date Entered Service Fate
    PL-62 Khabarovskiy sudostroitelnyy zavod, Khabarovsk May 1915 June 1916 July 1917 Extant in 1920
    PL-63 Khabarovskiy sudostroitelnyy zavod, Khabarovsk June 1915 July 1916 August 1917 Extant in 1920
    PL-64 Khabarovskiy sudostroitelnyy zavod, Khabarovsk July 1915 August 1916 September 1917 Extant in 1920
    PL-65 Khabarovskiy sudostroitelnyy zavod, Khabarovsk August 1915 September 1916 October 1917 Extant in 1920
    PL-66 Khabarovskiy sudostroitelnyy zavod, Khabarovsk Septemeber 1915 October 1916 November 1917 Extant in 1920
    PL-67 Khabarovskiy sudostroitelnyy zavod, Khabarovsk October 1915 November 1916 December 1917 Extant in 1920
    PL-68 Khabarovskiy sudostroitelnyy zavod, Khabarovsk November 1915 April 1917 May 1918 Extant in 1920

    See Also

    Ships of Far Eastern Imperial Navy 1920

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