HMS ''Spark'' (pennant number P236) was a S-class submarine of the third batch built for the

Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...

during World War II. She survived the war and was scrapped in 1950.

Design and description

The third batch was slightly enlarged and improved over the preceding second batch of the S-class. The submarines had a length of

overall Overalls or bib-and-brace overalls, also called dungarees in British English, are a type of garment usually used as protective clothing when working. The garments are commonly referred to as a "pair of overalls" by analogy with "pair of trousers ...

, a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Radio beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially lo ...

of and a

draft Draft, the draft, or draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a v ...

of . They displaced on the surface and submerged.Chesneau, p. 51 The S-class submarines had a crew of 48 officers and ratings. They had a diving depth of .McCartney, p. 7 For surface running, the boats were powered by two

diesel engine The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compr ...

s, each driving one

propeller shaft A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power, torque, and rotation, usually used to connect o ...

. When submerged each propeller was driven by a

electric motor An electric motor is a machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a electromagnetic coil, wire winding to gene ...

. They could reach on the surface and underwater. On the surface, the third batch boats had a range of at and at submerged. The boats were armed with seven 21 inch (533 mm)

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s. A half-dozen of these were in the bow and there was one external tube in the stern. They carried six reload torpedoes for the bow tubes for a grand total of thirteen torpedoes. Twelve

mines Mine, mines, miners or mining may refer to: Extraction or digging *Miner, a person engaged in mining or digging *Mining, extraction of mineral resources from the ground through a mine Grammar *Mine, a first-person English possessive pronoun Mi ...

could be carried in lieu of the internally stowed torpedoes. They were also armed with a 3-inch (76 mm)

deck gun A deck gun is a type of naval artillery mounted on the deck of a submarine. Most submarine deck guns were open, with or without a shield; however, a few larger submarines placed these guns in a turret. The main deck gun was a dual-purpose w ...

.Chesneau, pp. 51–52

Construction and career

HMS ''Spark'' was built by Scotts, of

Greenock Greenock (; ; , ) is a town in Inverclyde, Scotland, located in the west central Lowlands of Scotland. The town is the administrative centre of Inverclyde Council. It is a former burgh within the historic county of Renfrewshire, and forms ...

and launched on 28 December 1943. Thus far she has been the only ship of the Royal Navy to bear the name ''Spark''. She survived the

Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, spending between December 1944 and July 1945 with the

Eastern Fleet Eastern or Easterns may refer to: Transportation Airlines *China Eastern Airlines, a current Chinese airline based in Shanghai * Eastern Air, former name of Zambia Skyways *Eastern Air Lines, a defunct American airline that operated from 192 ...

, arriving at Trincomalee on 21 October 1944. She went on to sink two Japanese sailing vessels, three Japanese coasters, a barge and a tug. Another coaster was forced ashore on Panjang Island. ''Spark'' was attacked by an enemy escort which dropped sixteen depth charges, but managed to escape damage. She returned to the UK in October 1945.HMS Spark
Uboat.net She was sold on 28 October 1949. ''Spark'' was broken up at Faslane in October 1950. ''Spark'' acted as tow for the midget submarine ''XE-1'', which was assigned to attack the Japanese

heavy cruiser A heavy cruiser was a type of cruiser, a naval warship designed for long range and high speed, armed generally with naval guns of roughly 203 mm (8 inches) in calibre, whose design parameters were dictated by the Washington Naval Treat ...

Singapore Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...

Harbour as part of

Operation Struggle The XE-class submarines were a series of twelve midget submarines that were built for the Royal Navy during 1944; four more to a slightly different design were built 1954-5 as the Stickleback-class submarine, ''Stickleback'' class. They were ...

Notes

References

* * * * * {{DEFAULTSORT:Spark British S-class submarines (1931) 1943 ships World War II submarines of the United Kingdom Royal Navy ship names