A midget submarine is any submarine under 150 tons, typically operated by a crew of one or two but sometimes up to six or nine, with little or no on-board living accommodation. They normally work with mother ships, from which they are launched and recovered and which provide living accommodation for the crew and support staff.
Human torpedoes or manned torpedoes are a type of diver propulsion vehicle on which the diver rides, generally in a seated position behind a fairing. They were used as secret naval weapons in World War II. The basic concept is still in use.
Seeteufel was a two-man amphibious midget submarine, developed by Nazi Germany during World War II. Only one prototype was built in 1944, although its testing was relatively successful and negotiations began for another series of three to test the necessary changes before beginning series production in 1945. These plans were cancelled at the beginning of that year when the decision was made to concentrate production on designs already being built.
A deep-submergence rescue vehicle (DSRV) is a type of deep-submergence vehicle used for rescue of downed submarines and clandestine missions. While DSRV is the term most often used by the United States Navy, other nations have different designations for their vehicles.
The Advanced SEAL Delivery System (ASDS) was a midget submarine operated by the United States Navy and United States Special Operations Command. It provided stealthy submerged transportation for United States Navy SEALs from the decks of nuclear submarines for use as an insertion platform for covert and clandestine special operations missions. The ASDS was canceled in 2009 due to cost overruns and reliability issues, after the prototype was destroyed in a fire in 2008. As of 2019, the Navy plans to replace the ASDS with the Dry Combat Submersible, a similar midget submarine being developed by Lockheed Martin.
Bévéziers (Q179) was a Redoutable-class submarine of the French Navy. The class is also known as the "1500-ton class" and were termed in French French: « de grande patrouille». She was named after the 1690 Battle of Beachy Head, known in France as the Bataille de Bévéziers.
The Nahang is an Iranian-made class of midget submarine designed for shallow water operations. Only one prototype of this class is known to be completed, although its characteristics have remained unclear.
The Yugo-class submarine is a class of four midget submarines used primarily for infiltration and espionage by North Korea. The Yugo class was given its name because it was built to plans supplied to North Korea by Yugoslavia in 1965.
SM UC-50 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 20 November 1915 and was launched on 23 November 1916. She was commissioned into the German Imperial Navy on 21 December 1916 as SM UC-50. In nine patrols UC-50 was credited with sinking 29 ships, either by torpedo or by mines laid. UC-50 was sunk by depth charges from British destroyer Zubian in the Dover Strait off Dungeness on 4 February 1918.
SM UC-51 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 20 November 1915 and was launched on 5 December 1916. She was commissioned into the German Imperial Navy on 6 January 1917 as SM UC-51. In seven patrols UC-51 was credited with sinking 28 ships, either by torpedo or by mines laid. UC-51 was mined and sunk in the English Channel on 17 November 1917.
SM UC-71 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 12 January 1916 and was launched on 12 August 1916. She was commissioned into the German Imperial Navy on 28 November 1916 as SM UC-71. In 19 patrols UC-71 was credited with sinking 63 ships, either by torpedo or by mines laid. UC-71 sank on 20 February 1919 in the North Sea while on her way to be surrendered. Discovery a century later of her wreck with all hatches open suggested she had been deliberately scuttled by her own crew.
The CB class was a group of midget submarines built for the Italian Navy during World War II. However, they were also used by several other navies, seeing action in the Mediterranean and in the Black Sea.
I-10 was an Imperial Japanese Navy Type A1 submarine that served during World War II. Designed as a submarine aircraft carrier, she was commissioned in 1941 and supported the attack on Pearl Harbor, operated in the Indian Ocean — including support for the 1942 midget submarine attack on Diego Suarez — and in the New Caledonia and New Zealand areas, and took part in the Guadalcanal campaign and Marianas campaign before she was sunk in 1944 during her seventh war patrol.
Fateh is an Iranian designed class of semi-heavy submarines. The Iranian media reported that Fateh class subs can operate more than 200 meters (660 ft) below the sea surface for nearly five weeks.
The SX-404-class submarine, was a class of midget submarines produced by the Italian firm Cos.Mo.S.
Anteo is a submarine rescue ship of the Italian Navy, assigned to Raggruppamento Subacquei ed Incursori "Teseo Tesei" (COMSUBIN). Anteo is the third ship to bear this name in the Italian Navy. The ship's design was developed by the "Ufficio Navi Speciali del Reparto Progetti Navi", according to the guidelines provided by the Navy General Staff. The ship was built at Cantiere Navale Breda di Porto Marghera and commissioned to the Italian Navy on 31 July 1980.
CABI Cattaneo is an Italian boat and submersible builder which primarily supplies the Special Operations Forces market. Due to the nature of their work they are extremely secretive.
Cos.Mo.S, officially Costruzione Motoscafi Sottomarini s.a.s, was an Italian submarine and submersible manufacturer.
Fateh is a coastal submarine of the Islamic Republic of Iran Navy, and the lead ship of her class. She was commissioned into the Southern Fleet on 17 February 2019 at Bostanu shipyard, Bandar Abbass, and bestowed by Iranian President Hassan Rouhani.
