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 United Kingdom's naval warfare force. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early medieval period, the first major maritime engagements were foug ...

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, also called bib-and-brace overalls or dungarees, 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". Overalls were ...

, 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 * Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized g ...

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 ves ...

of . They

displaced Displaced may refer to: * Forced displacement Forced displacement (also forced migration) is an involuntary or coerced movement of a person or people away from their home or home region. The United Nations High Commissioner for Refugees, UNH ...

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 Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-ca ...

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 and torque and rotation, usually used to connect ...

. When submerged each propeller was driven by a

electric motor An electric motor is an electrical 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 wire winding to generate forc ...

. 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 abo ...

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 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 ...

.Chesneau, pp. 51–52

Construction and career

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

Greenock Greenock (; sco, Greenock; gd, Grianaig, ) is a town and administrative centre in the Inverclyde council area in Scotland, United Kingdom and a former burgh within the historic county of Renfrewshire, located in the west central Lowlands of ...

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, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

, spending between December 1944 and July 1945 with the

Eastern Fleet Eastern may refer to: Transportation *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 1926 to 1991 * Eastern Air ...

, 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 The 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 caliber, whose design parameters were dictated by the Washington Naval ...

Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...

Harbour as part of Operation Struggle.

Notes

References

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