German submarine U-20 was a Type IIB U-boat of Nazi Germany's Kriegsmarine. Her keel was laid down on 1 August 1935, by Germaniawerft of Kiel as yard number 550. She was commissioned on 1 February 1936. During World War II, she conducted operations against enemy shipping.
U-413 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
SM U-35 was a German U 31-class U-boat which operated in the Mediterranean Sea during World War I. It ended up being the most successful U-boat participating in the war, sinking 220 merchant ships for a total of 505,119 gross register tons (GRT).
German submarine U-75 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. U-75 was moderately successful in her early career in the Battle of the Atlantic, but in autumn 1941 she was dispatched to the Mediterranean Sea with poor results, leading to the eventual destruction of the boat and her crew.
SM U-14 or U-XIV was a U-boat or submarine of the Austro-Hungarian Navy during the First World War. She was launched in 1912 as the French Brumaire-class submarineCurie, but captured and rebuilt for service in the Austro-Hungarian Navy. At war's end, the submarine was returned to France and restored to her former name.
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.
German submarine U-74 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II.
German submarine U-81 was a Type VIIC U-boat of the navy (Kriegsmarine) of Nazi Germany during World War II, famous for sinking the aircraft carrier HMS Ark Royal.
German submarine U-73 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down by Vegesacker Werft, Germany as yard number 1 on 5 November 1939, launched on 27 July 1940 and commissioned on 30 September of the same year under Kapitänleutnant (Kptlt.) Helmut Rosenbaum.
SM UB-42 was a Type UB II submarine or U-boat for the German Imperial Navy during World War I. UB-42 operated in the Mediterranean and the Black Seas during the war. She was broken up at Malta in 1920.
German submarine U-77 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine built by the Bremer Vulkan-Vegesacker Werft, Bremen-Vegesack. Her keel was laid down on 28 March 1940, by Bremer Vulkan of Bremen-Vegesack, Germany as yard number 5. She was launched on 23 November 1940 and commissioned on 18 January 1941, with Oberleutnant zur See Heinrich Schonder in command until 2 September 1942, when he was succeeded by Oblt.z.S. Otto Hartmann, who remained in charge until the U-boat's loss.
SM U-72 was one of 329 submarines serving in the Imperial German Navy in World War I. U-72 was engaged in the commerce war in First Battle of the Atlantic.
Type N3-S ships were a Maritime Commission small coastal cargo ship design to meet urgent World War II shipping needs, with the first of the 109 N3, both steam and diesel, type hulls delivered in December 1942.
German submarine U-410 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine during World War II, operating mainly in the Mediterranean. Her insignia was a sword & shield, she did not suffer any casualties until she was sunk.
SM UB-49 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 28 June 1917 as SM UB-49.
German submarine U-431 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 4 January 1940 by Schichau-Werke in Danzig as yard number 1472, launched on 2 February 1941 and commissioned on 5 April 1941 under Kapitänleutnant Wilhelm Dommes.
German submarine U-375 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 14 March 1940 by Howaldtswerke in Kiel as yard number 6, launched on 7 June 1941 and commissioned on 19 July 1941 under Kapitänleutnant Jürgen Koenenkamp.
German submarine U-409 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine in World War II. She was laid down on 26 October 1940 by Danziger Werft, Danzig as yard number 110, launched on 23 September 1941 and commissioned on 21 January 1942 under Oberleutnant zur See Hanns-Ferdinand Massmann.
German submarine U-59 was a Type IIC U-boat of Nazi Germany's Kriegsmarine that served in the Second World War. She was built by Deutsche Werke AG, Kiel. Ordered on 17 June 1937, she was laid down on 5 October as yard number 258. She was launched on 12 October 1938 and commissioned on 4 March 1939 under the command of Oberleutnant zur See Harald Jürst.
German submarine U-136 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.
Bahamas 
