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((Short description|none))

This is a '''list of submarine actions'''. [[Submarine actions]] have been performed in several wars, including the [[American Civil War]] (1861 –&nbsp;1865), the [[First Balkan War]] (1912 – 1913), [[World War I]] (1914 – 1918), and [[World War II]] (1939 –&nbsp;1945). There have also been three more actions since the end of WWII in 1945.

==Actions==
((Dynamic list))((More citations needed|date=January 2024))[[File:Submarine U-14 (LOC) (6358166395).jpg|thumb|A German World War I-era submarine]]

===American Civil War===
*1864, February 17 – [[Confederate States of America|Confederate]] human-powered submarine [[H.L. Hunley|''H.&nbsp;L. Hunley'']] [[Action of 17 February 1864|sinks]] the [[Union (American Civil War)|Union]] sloop ((USS|Housatonic|1861|6)) with [[spar torpedo]], off [[Charleston, South Carolina|Charleston]]. The ''H. L. Hunley'' thus became the first submarine to successfully sink an enemy vessel in combat, and was the direct progenitor of what would eventually become international [[submarine warfare]].

===First Balkan War===
*1912, December 9 – ((ship|Greek submarine|Delfin|1912|6)) became the first submarine to launch a self-propelled torpedo at an enemy ship, though the ship did not sink due to a weapons malfunction.

===World War I===
[[File:Versenkung der britischen Panzerkreuzer CRESSY, HOGUE und ABOUKIR durch U 9 am 22. September 1914 vor der niederländischen Küste. Nach einer Originalzeichnung von Hans Bohrdt.jpg|thumb|Illustration by [[Hans Bohrdt]] depicting the sinking of ((HMS|Cressy|1899|6)), ((HMS|Hogue|1900|6)) and ((HMS|Aboukir|1900|6)) by ''U-9'' on 22 September 1914 off the Dutch coast.]]
*1914, September 5 – [[HMS Pathfinder (1904)|HMS ''Pathfinder'']] is sunk at the start of World War I by ((SMU|U-21|Germany|2)), becoming the first ship to ever be sunk by a self-propelled torpedo fired by submarine.
*1914, September 22 – German submarine ((SMU|U-9||2)) [[Action of 22 September 1914|sinks three unescorted British armoured cruisers]] ((HMS|Aboukir|1900|6)), ((HMS|Hogue|1900|6)) and ((HMS|Cressy|1899|6)) in approximately one hour.
*1914, October 18 – German submarine ((SMU|U-27|Germany|2)) sinks ((HMS|E3)) in the first ever successful attack on one submarine by another.
*1914, October 20 – German submarine ((SMU|U-17|Germany|2)) sinks ((SS|Glitra)) in the first submarine sinking of a [[merchant ship]] during the world wars.<ref>((Cite book| title=The U-Boat Offensive 1914–1945 |author=Tarrant, V.E. |publisher=Sterling Publishing |year=1989 |page=12 |isbn=1-85409-520-X))</ref>
*1915, May 7 – German submarine ((SMU|U-20|Germany|2)) sinks ((RMS|Lusitania)) killing 1,198 and leaving 761 survivors.  The sinking turned public opinion in many countries against Germany, contributed to the [[U.S. entry into World War I]].
*1915, May 25/27 – In the morning of May 27 German submarine ''U-21'' sinks the British pre-dreadnought battleship ((HMS|Majestic|1895|6)) off the Gallipoli peninsula. Two days after the same U-boat sunk the pre-dreadnought [[HMS Triumph (1903)|HMS ''Triumph'']] near Gaba Nepe.
*1916, March 22 – German submarine ((SMU|U-68)) is sunk by the [[Q-ship]] – a merchant ship carrying hidden weapons – [[HMS Farnborough|HMS ''Farnborough'']] in the first successful use of [[depth charge]]s.<ref>((Cite book| title=The U-Boat Offensive 1914–1945 |author=Tarrant, V.E. |publisher=Sterling Publishing |year=1989 |page=27 |isbn=1-85409-520-X))</ref> (''Farnborough'' sank the SM ''U-83'' in 1917)

===World War II===
[[File:USS O'Brien (DD-415) being torpedoed on 15 September 1942 (80-G-457818).jpg|thumb|((USS|O'Brien|DD-415|2)) hit by torpedo as ((USS|Wasp|CV-7|6)) burns. Both ship were torpedoed and sunk by ''I-19''.]]
*1939, September 17 - German U-boat ((GS|U-29|1936|2)) sinks [[HMS Courageous (50)|HMS ''Courageous'']].
*1939, October 14 – German [[U-boat]] ((GS|U-47|1938|2)) sinks [[HMS Royal Oak (08)|HMS ''Royal Oak'']] in [[Scapa Flow]] base. The First Lord of Admiralty [[Winston Churchill]] officially announced the loss of ''Royal Oak'' to the House of Commons, first conceding that the raid had been "a remarkable exploit of professional skill and daring".
*1940, October 17–19 – The most effective [[Wolfpack (naval tactic)|wolfpack]] of the world wars including [[Otto Kretschmer|Kretschmer]], [[Günther Prien|Prien]] and [[Joachim Schepke|Schepke]] sinks 32 ships from [[Convoy SC 7]] and [[Convoy HX 79]] in two days.
*1940, November 23 – ((GS|U-100|1940|6)) sinks 7 Allied Merchant ships from Convoy SC-11 in only 3 hours.
*1941, November 13 – [[German submarine U-81 (1941)|''U-81'']] strikes ((HMS|Ark Royal|91|6)) with a single torpedo. She sinks the following day due to crippling damage.<ref>((cite book |last=Rossiter |title=Ark Royal |pages=375–6))</ref>
*1941, November 28 - Dutch submarine [[HNLMS O 21|HNLMS O-21]] becomes the only submarine to sink another submarine while they were both surfaced when she sinks German submarine [[German submarine U-95 (1940)|U-95]] with a stern torpedo.
*1942, June 7 - The [[Japanese submarine I-168|''I-168'']] sinks the US aircraft carrier USS Yorktown (CV-5) and the USS Hammonn (DD-214) who was attempting to save the Yorktown from battle damage she had received in the Battle of Midway.
*1942, September 15 – Japanese submarine [[Japanese submarine I-19|''I-19'']] sinks U.S. aircraft carrier ((USS|Wasp|CV-7|6)) and destroyer ((USS|O'Brien|DD-415|6)) and damages battleship ((USS|North Carolina|BB-55|6)) with a single salvo.
*1942, November 13 - [[Japanese submarine I-26|''I-26'']] sinks [[USS Juneau (CL-52)|USS ''Juneau'']]. The dead includes all five [[Sullivan brothers]].
*1943, March 16–19 – The largest North Atlantic U-boat wolfpack attack of the world wars sinks 22 ships from [[Convoys HX 229/SC 122]].
*1943, April 29 – May 6 – [[Convoy ONS 5]] is the last major North Atlantic wolfpack attack by surfaced U-boats as escorts demonstrate effective use of [[radar]] to sink 6 U-boats in low-visibility conditions.
*1943, May 14 – ((GS|U-640||2)) or ((GS|U-657||2)) is the first submarine sunk by a [[Mark 24 Mine|homing torpedo]].
*1944, November 29 – [[USS Archer-Fish (SS-311)|USS ''Archer-Fish'']] sinks Japanese aircraft carrier [[Japanese aircraft carrier Shinano|''Shinano'']], the largest vessel of that time.
*1943, October 31-November 1 – [[USS Borie (DD-215)|USS ''Borie'']] and [[German submarine U-405|''U-405'']] engage in a pitched battle ending with ''Borie'' ramming the submarine. Both ships are lost.
*1945, January 30 – Soviet submarine [[Soviet submarine S-13|''S-13'']] sinks the German ship [[KdF Ship Wilhelm Gustloff|''Wilhelm Gustloff'']], with older and cautious estimates of 6,000 but more recent estimates of more than 9,000 casualties.
*1945, February 6 – Royal Navy submarine ((HMS|Venturer|P68|2)) becomes the only submarine to sink another submarine while they were both submerged when she sinks ((GS|U-864||2)) off Norway.
*1945, April 16 – Soviet submarine [[Soviet submarine L-3|''L-3'']] sinks the German ship [[Goya (ship)|''Goya'']], with 6,000–7,000 casualties.
*1945, July 30 - [[USS Indianapolis (CA-35)|USS ''Indianapolis'']] is sunk by the [[Japanese submarine I-58|Japanese submarine ''I-58'']]. She suffers the largest loss of life of an American ship.
[[Image:ArcherfishJune1945.jpg|thumb|''Archerfish'' undergoing a sea test on 5 June 1945 near [[San Francisco]]]]

===Post-World War II===
*1971, December 9 – [[Pakistan]]i ((sclass|Daphné|submarine)) [[PNS Hangor (S131)|PNS ''Hangor'']] during the [[1971 Indo-Pakistani War]] sinks the [[India]]n frigate ((INS|Khukri|F149|6)). This was the first ship sunk by a submarine since [[World War II]]. ''Hangor'' also damaged another warship, INS ''Kirpan''. This was the heaviest casualty that the [[Pakistan Navy|Pakistani Navy]] inflicted on the [[Indian Navy]] in the war.<ref>[http://www.orbat.com/site/cimh/navy/kills(1971)-2.pdf Casualties in 1971 war] ((webarchive|url=https://web.archive.org/web/20051030235952/http://www.orbat.com/site/cimh/navy/kills%281971%29-2.pdf |date=2005-10-30 ))</ref> After the attack on ''Khukri'', the [[Indian Navy]] ceased its attacks on [[Karachi]] and moved the focus of its operations to [[East Pakistan]] ports like [[Chittagong]] and [[Cox's Bazar District|Cox's Bazar]].
*1982, May 2 – British nuclear submarine [[HMS Conqueror (S48)|HMS ''Conqueror'']] sinks Argentine cruiser [[ARA General Belgrano|''General Belgrano'']] off the [[Falkland Islands]]. It was the first sinking of any vessel by a nuclear-powered submarine in wartime and also the first time that a nuclear-powered submarine fired weapons in an act of war.
*2010, March 26 – A North Korean [[Yono class submarine|2-men midget submarine]] [[ROKS Cheonan sinking|sinks]] the South Korean corvette [[ROKS Cheonan (PCC-772)|ROKS ''Cheonan'']] off [[Baengnyeong Island]].

==See also==

*[[List of single ship actions]]

==References==
<references/>

((DEFAULTSORT:Submarine Actions))
[[Category:Submarine warfare]]
[[Category:Naval warfare]]
[[Category:Naval lists]]
[[Category:Lists of naval battles]]

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