Odin-class submarine

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Oxley and Otway
Class overview
Name	Odin class or O class
Operators	Royal Navy  Royal Australian Navy
Preceded by	L class
Succeeded by	Parthian class
Subclasses	Capitan O'Brien class
In commission	22 July 1927–1945
Completed	9
Lost	6
Retired	3
General characteristics
Type	Submarine
Displacement	Group 1: 1,311 long tons (1,332 t) surfaced 1,892 long tons (1,922 t) submerged Group 2: 1,781 long tons (1,810 t) surfaced 2,030 long tons (2,060 t) submerged
Length	Group 1: 275 ft (83.8 m) Group 2: 283 ft 6 in (86.4 m)
Beam	Group 1: 28 ft (8.5 m) Group 2: 30 ft (9.1 m)
Propulsion	Diesel-electric 2 × diesel engines, 4,600 hp (3,400 kW) 2 × electric motors, 350 hp (260 kW) 2 screws
Speed	Group 1: 15.5 knots (28.7 km/h; 17.8 mph) surfaced 9 knots (17 km/h; 10 mph) submerged Group 2: 17.5 knots (32.4 km/h; 20.1 mph) surfaced 9 knots (17 km/h; 10 mph) submerged
Range	8,400 nmi (15,600 km; 9,700 mi) at 10 knots (19 km/h; 12 mph) surfaced 70 nmi (130 km; 81 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	300 ft (91.4 m)
Complement	54
Sensors and processing systems	ASDIC
Armament	8 × 21-inch (533 mm) torpedo tubes (6 bow, 2 stern) with 16 reloads 1 × QF 4-inch (102 mm) Mk XII deck gun 2 × Lewis machine guns

The Odin-class submarine (or "O class") was a class of nine submarines developed and built for the Royal Navy (RN) in the 1920s. The prototype, Oberon, was followed by two boats originally ordered for the Royal Australian Navy, but transferred to the RN in 1931 because of the poor economic situation in Australia, and six modified boats ordered for the RN. Three modified boats were built for the Chilean Navy as the Capitan O'Brien-class submarines in 1929.