German submarine U-556 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down on 2 January 1940 at the Blohm & Voss yard in Hamburg as yard number 532, launched on 7 December 1940, and commissioned on 6 February 1941 under the command of Kapitänleutnant Herbert Wohlfarth, who commanded her for her entire career that lasted less than five months. U-556 conducted only two patrols, sinking six ships totalling 29,552 gross register tons (GRT) and damaging one other of 4,986 GRT, before she was sunk on 27 June 1941.
HMS Triton was a submarine of the Royal Navy named for the son of Poseidon and Amphitrite, the personification of the roaring waters. She was the lead ship of the T class of diesel-electric submarines. Her keel was laid down on 28 August 1936 by Vickers Armstrong at Barrow-in-Furness. She was launched on 5 October 1937, and commissioned on 9 November 1938.
German submarine U-47 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down on 25 February 1937 at Friedrich Krupp Germaniawerft in Kiel as yard number 582 and went into service on 17 December 1938 under the command of Günther Prien.
HMT Warwick Deeping (H136) was a naval trawler of the British Royal Naval Patrol Service during World War II, sunk off the Isle of Wight in October 1940.
German submarine U-124 was a Type IXB U-boat of Nazi Germany's Kriegsmarine during World War II. She operated in the Atlantic as part of the 2nd U-boat flotilla, both west of Scotland and east of the eastern US coast. She was also present off northern South America.
Enrico Toti was one of four Balilla-class submarines built for the Regia Marina during the late 1920s. The boat played a minor role in the Spanish Civil War of 1936–1939 supporting the Spanish Nationalists. She was the only Italian submarine to have sunk a Royal Navy submarine during the Second World War.
The Rainbow-class submarine or R class was a quartet of patrol submarines built for the Royal Navy in the early 1930s.
HMS P48 was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness. Commissioned on 18 June 1942, Vickers arranged for the wife of serving submarine Captain, Alister Mars of HMS Unbroken, Ting Mars and Commander of the cruiser Jamaica to officially launch P.48 at Barrow dockyard.
HMS Splendid was a third-batch S-class submarine built for the Royal Navy during World War II. She was laid down on 7 March 1941 and launched on 19 January 1942. After an initial patrol through the Bay of Biscay to Gibraltar, Splendid conducted two patrols in the Mediterranean Sea; one was abandoned after technical problems and on the other she sank two Italian ships. On her next patrol, the submarine attacked two Italian convoys, sinking an Italian destroyer in the second attack. Based in Algiers, the boat operated north of Sicily, sinking six Italian ships, including two tankers and two heavy merchant ships. Splendid was detected by a German destroyer on 21 April 1943 while patrolling off Naples, Italy; the submarine was attacked with depth charges by the destroyer and forced to surface, after which she was scuttled and her surviving crew members taken prisoner. She was the most successful British submarine by tonnage sunk between November 1942 and May 1943.
HMS Narwhal (N45) was one of the six ship class of Grampus-class mine-laying submarine of the Royal Navy. She was built by Vickers Armstrong, Barrow and launched 29 August 1935. She served in the Second World War in home waters. She was lost in the North Sea on 23 July 1940, probably sunk by German aircraft.
HMS Rorqual (N74) was a British mine-laying submarine, one of the six ships of the Grampus class of the Royal Navy. She was built by Vickers Armstrong, Barrow and launched 27 July 1936. She served in the Second World War in the Mediterranean and in the far east. She was the only Grampus-class submarine to survive the war, and she is considered the most successful minelaying submarine of World War II, sinking 57,704 GRT of enemy shipping, 35,951 of which through her mines.
HMS Utmost was a British U class submarine, of the second group of that class, built by Vickers Armstrong, Barrow-in-Furness. She was laid down on 2 November 1939 and was commissioned on 17 August 1940. So far she has been the only ship of the Royal Navy to bear the name Utmost.
Vice-Admiral Sir Arthur Richard Hezlet, nicknamed Baldy Hezlet, was a decorated Royal Navy submariner. He became the Royal Navy's youngest captain at the time – aged 36 – and its youngest admiral, aged 45. In retirement he became a military historian.
HMS Rainbow was a Rainbow-class submarine built for the Royal Navy during the 1930s.
HMS Garlies (K475) was a British Captain-class frigate of the Royal Navy in commission during World War II. Originally constructed as the United States Navy Evarts-class destroyer escort USS Fleming (DE-271), she served in the Royal Navy from 1943 to 1945 and in the U.S. Navy as USS Garlies (DE-271) from August to October 1945.
HMS Gore (K481) was a British Captain-class frigate of the Royal Navy in commission during World War II. Originally constructed as the United States Navy Evarts-class destroyer escort USS Herzog (DE-277), she served in the Royal Navy from 1943 to 1946.
HMS Loosestrife (K105) was a Flower-class corvette of the Royal Navy which sailed with the North Atlantic convoys of the Second World War.
Captain Michael Lindsay Coulton "Tubby" Crawford DSC & Bar was an officer in the Royal Navy and submariner.
Pegaso was a torpedo boat and an escort aviso of the Italian Regia Marina. She was one of the most successful Axis anti-submarine warships of World War II.
Primo Longobardo was an Italian naval officer and submariner during World War II.
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