HMS B1

History
United Kingdom
Name	HMS B1
Builder	Vickers
Launched	25 October 1904
Commissioned	16 April 1905
Fate	Sold for scrap, May 1921
General characteristics
Class and type	B-class submarine
Displacement	287 long tons (292 t) surfaced 316 long tons (321 t) submerged
Length	142 ft 3 in (43.4 m)
Beam	12 ft 7 in (3.8 m)
Draught	11 ft 2 in (3.4 m)
Installed power	600 bhp (450 kW) petrol 180 hp (134 kW) electric
Propulsion	1 × 16-cylinder Vickers petrol engine 1 × electric motor
Speed	12 kn (22 km/h; 14 mph) surfaced 6.5 kn (12.0 km/h; 7.5 mph) submerged
Range	1,000 nmi (1,900 km; 1,200 mi) at 8.7 kn (16.1 km/h; 10.0 mph) on the surface
Test depth	100 feet (30.5 m)
Complement	2 officers and 13 ratings
Armament	2 × 18 in (450 mm) bow torpedo tubes

HMS B1 was the lead boat of the B-class submarines built for the Royal Navy in the first decade of the 20th century. The boat survived the First World War and was sold for scrap in 1921.