BPL 1917 g-class submarine

BPL 1917 g-class Submarine
Class overview
Name	BPL 1917 g-class Submarine
Operators	Far Eastern Imperial Navy
Class before	BPL 1911 g-class submarine
Planned	70
Building	6
General Characteristics
Type	Submarine
Displacement	952 tons surfaced 1260 tons submerged
Length	80.2 metres (263 ft)
Beam	6.9 metres (23 ft)
Draught	4.12 metres (13.5 ft)
Propulsion	2 shafts Diesel-electric propulsion 4 diesel engines (2 per shaft)
Power	2,200 hp (1,600 kW) (diesel) 900 hp (670 kW) (electric)
Speed	16 knots (30 km/h; 18 mph) surfaced 9 knots (17 km/h; 10 mph) submerged
Range	15 days, 1200 miles at 16 knots 22,5 miles under water at 9 knots
Complement	50
Armament	4 × bow 450 mm (18-inch) torpedo tubes 2 × stern 450 mm (18-inch) torpedo tubes 2 × 76.2 mm/40 KO 1915 g gun

Development

Follow-on design of the BPL 1911 g Class. First Far Eastern indigenous large submarine design although based heavily on the earlier Holland-design. Intended to have better performance oceang-going capability. Total of 70 boats were planned under the 1916-17 supplementary naval program but only 6 units were laid down prior the revolution.

Characteristics

Double-hull design, basically enlarged version of the previous class. Features the new dual purpose 76mm gun which has elevation high enough for anti-aircraft fire.

Ships in class

Patch 1

Name	Builder	Laid down	Launch Date	Entered Service	Fate
PL-70	Witte & Stroganov, Dalny	June 1918	September 1919
Under construction in 1920
PL-71	Witte & Stroganov, Dalny	June 1918	September 1919
Under construction in 1920
PL-72	Witte & Stroganov, Dalny	July 1918	September 1919
Under construction in 1920
PL-73	Witte & Stroganov, Dalny	July 1918	October 1919
Under construction in 1920
PL-74	Witte & Stroganov, Dalny	July 1918	October 1919
Under construction in 1920
PL-75	Witte & Stroganov, Dalny	August 1918
Under construction in 1920

See Also

Ships of Far Eastern Imperial Navy 1920