The ARA San Luis (S-32) is a Type 209 diesel-powered submarine of the Argentine Navy. Built in Germany as one of a batch of four, San Luis has a displacement of 1,285 tonnes and was introduced to the ARA in 1978. The German Type 209 diesel-electric submarine was the most popular export-sales submarine in the world from the late 1960s into the first years of the 21st century. ... German UC-1 class World War I submarine A model of Gunter Priens Unterseeboot 47 (U-47), German WWII Type VII diesel-electric hunter-killer (SSK) submarine Inside of the Argonaute, showing the typical obstructed, tiny space of a post-WWII diesel attack submarine. ... Argentine Navy Jack The Navy of the Argentine Republic (Armada de la República Argentina, ARA) is the navy of Argentina. ... Argentine Navy Jack The Navy of the Argentine Republic (Armada de la República Argentina, ARA) is the navy of Argentina. ... 1978 (MCMLXXVIII) was a common year starting on Sunday. ...

San Luis is most famous for serving in the Falklands War. Only one other submarine, the old Second World War era ARA Santa Fe was also operational at this time. After the Santa Fe was captured and scuttled by the British in South Georgia on April 28, and the nuclear submarine HMS Conqueror had sunk the ARA General Belgrano on May 2, the Argentine fleet retired to port for the duration of the war, with the exception of the San Luis, making her the only Argentine naval presence facing the British fleet. The presence of the San Luis was worrying for the British as she was relatively modern and difficult to detect. Combatants United Kingdom Argentina Casualties 258 killed[1] 777 wounded 2 taken prisoner 649 killed 1,068 wounded 11,313 taken prisoner The Falklands War was fought in 1982 between Argentina and the United Kingdom over the Falkland Islands and South Georgia and the South Sandwich Islands. ... Mushroom cloud from the nuclear explosion over Nagasaki rising 18 km into the air. ... The ARA Santa Fe was a submarine in the Armada Republica Argentina from 1971 to 1982. ... South Georgia and the South Sandwich Islands is an overseas territory of the United Kingdom, also claimed by Argentina. ... April 28 is the 118th day of the year (119th in leap years) in the Gregorian Calendar, with 247 days remaining. ... HMS Conqueror was a Churchill-class nuclear-powered submarine that served in the Royal Navy from 1971 to 1990. ... The Belgrano as she was in 1941 as the USS Phoenix passing Battleship row at Pearl Harbor The ARA General Belgrano was an Armada República Argentina cruiser sunk, with significant loss of life, in a controversial incident during the Falklands War. ... May 2 is the 122nd day of the year in the Gregorian calendar (123rd in leap years). ...

San Luis reported two attacks on Royal Navy ships during the war. On May 1, the ships HMS Brilliant and Yarmouth were sent to intercept the San Luis in the Falkland Sound channel. San Luis reported firing two torpedoes at the ship which subsequently missed. The Royal Navy of the United Kingdom is the oldest of the British armed services (and is therefore the Senior Service). ... May 1 is the 121st day of the year in the Gregorian calendar (122nd in leap years). ... HMS Brilliant (F90) was a Type 22 frigate of the Royal Navy. ... HMS Yarmouth (F101) was this first Modified Type 12 (Rothesay) class frigate to enter service with the Royal Navy. ... The Falkland Sound is a sea strait in the Falkland Islands. ...

San Luis attacked again on the night of May 10. Alacrity had made passage up the Falkland Sound, sinking an Argentine merchant navy ship on the way. As Alacrity left the channel before dawn, its sister ship Arrow was waiting to escort her back to the Task Force. San Luis detected the two ships and fired upon them, again missing due problems with their SST-4 Torpedoes. May 10 is the 130th day of the year in the Gregorian Calendar (131st in leap years). ... HMS Alacrity (F174) was a Type 21 frigate of the Royal Navy. ... HMS Arrow (F173) was a Type 21 frigate of the Royal Navy. ...

For the rest of the war, San Luis tracked the British ships, but with no successful attacks.

On 1985, San Luis was intended to be equipped with a small nuclear reactor but the program was abandoned and the ship was put on Reserve since then. 1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ...

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