Italian submarine Alagi was an built in the 1930s serving in the Regia Marina during World War II. She was named after the Amba Alagi mountain in Ethiopia, which was at the time part of Italian East Africa
Design and description
The Adua-class submarines were essentially repeats of the preceding . They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of .
For surface running, the boats were powered by two diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the Adua class had a range of at , submerged, they had a range of at .
The boats were armed with six internal torpedo tubes, four in the bow and two in the stern. They were also armed with one Škoda 10 cm K10#OTO 100.2F47 History| deck gun for combat on the surface. The light anti-aircraft armament consisted of one or two pairs of Breda Model 1931 Machine Gun| machine guns. In 1940 Alagi was assigned to 71st Squadron (V Submarine Group) based at Cagliari.
On 10 June 1940, at the outbreak of hostilities, Alagi was on patrol in the waters off Bizerta. She remained on station until 20 June without sighting any enemy ships.
From 5 to 11 June 1941, Alagi, under command of captain Giulio Contreas, patrolled 20 miles northeast of Ras Azzaz. She sighted a small enemy ship and tried to launch an attack, but it was interrupted by a second ship which detected Alagi and headed in her direction, forcing her to disengage. (141 killed and 165 survivors).
On 12 July 1942 at 20:04, at , northwest of Tripoli, Syria, Alagi fired two torpedoes and scored one hit in the engine room of the Turkish tanker Antares (3723 GRT, 1893) on a trip from Iskanderun to Haifa, causing him to be beached on Ruad Island.