HMS Odin was a British Oberon-class submarine operated by the Royal Navy.
The Oberon class was a direct follow on of the Porpoise-class, with the same dimensions and external design, but updates to equipment and internal fittings, and a higher grade of steel used for fabrication of the pressure hull.
As designed for British service, the Oberon-class submarines were 241 feet (73 m) in length between perpendiculars and 295.2 feet (90.0 m) in length overall, with a beam of 26.5 feet (8.1 m), and a draught of 18 feet (5.5 m). Displacement was 1,610 tons standard, 2,030 tons full load when surfaced, and 2,410 tons full load when submerged. Propulsion machinery consisted of 2 Admiralty Standard Range 16 VMS diesel generators, and two 6,000 shaft horsepower (4,500 kW) electric motors, each driving a 7 feet (2.1 m) 3-bladed propeller at up to 400 rpm. Top speed was 17 knots (31 km/h; 20 mph) when submerged, and 12 knots (22 km/h; 14 mph) on the surface. Eight 21-inch (530 mm) diameter torpedo tubes were fitted (six facing forward, two aft), with a total payload of 24 torpedoes. The boats were fitted with Type 186 and Type 187 sonars, and an I-band surface search radar. The standard complement was 68: 6 officers, 62 sailors.
Five ships of the Royal Navy have been named HMS Odin after the god Odin in Norse mythology. A sixth was ordered, but later cancelled:
HMS Odin (N84) was an O-class submarine of the Royal Navy. She was laid down by HM Dockyard at Chatham in Kent on 23 June 1927, launched on 5 May 1928 and commissioned on 21 December 1929. The name Odin refers to the 74-gun, Danish man-of-war surrendered to the British in 1807.
She served with the 5th Flotilla at Portsmouth in 1929-1930, with the 4th Flotilla at Hong Kong from 1930-1939, with the 8th Flotilla at Colombo in Ceylon in 1939-1940, and with the 1st Flotilla at Alexandria in Egypt in 1940.
Odin was depth charged and later rammed on surface by the Italian Freccia-class destroyer Strale and the Folgore-class destroyer Baleno and sank in the Gulf of Taranto on 13 June 1940.
HMS Odin was a steam-powered first-class paddle frigate of the Royal Navy. She was launched in 1846 and was used in the Baltic theatre of the Crimean War.
The ship was launched on 24 July 1846, at 1,301 73/94 bm, and decommissioned in 1865. She was sold that year to Castle & Beech for breaking up. She was initially intended to carry eight 32pdr carronades on the middle deck, but this idea was later discarded and these guns were never fitted. Between 1850 and 1851 she was fitted out for an Ambassador.
The ship had six commanders during her operational lifetime. Captain Frederick Thomas Pelham took command at her commissioning at Portsmouth on 24 May 1847. He paid her off at Portsmouth and was succeeded by Commander William Saltonstall Wiseman, who took over on 1 August 1851, until October 1851. Captain Francis Scott was in command from 18 December 1852 until 3 February 1855, Captain James Willcox took over on 7 September 1855 and Captain Lord John Hay commanded Odin from 20 September 1859 until 1863.