Yugoslav submarine Osvetnik

Osvetnik

Osvetnik underway in 1930
History
Kingdom of Yugoslavia
Name	Osvetnik
Namesake	Avenger
Builder	Ateliers et Chantiers de la Loire, Nantes, France
Launched	14 January 1929
In service	1929–1941
Out of service	1941
Italy
Name	Francesco Rismondo
Namesake	Francesco Rismondo
Acquired	Captured on 17 April 1941
In service	1941–43
Out of service	18 September 1943
Fate	Scuttled by the Germans at Bonifacio after capture
General characteristics
Class and type	Osvetnik-class diesel-electric submarine
Displacement	630 long tons (640 t) (surfaced) 809 long tons (822 t) (submerged)
Length	66.5 m (218 ft 2 in)
Beam	5.4 m (17 ft 9 in)
Draught	3.8 m (12 ft 6 in)
Propulsion	2 × shaft MAN diesel engines 1,480 bhp (1,100 kW), 2 × Nancy electric motors 1,000 shp (750 kW)
Speed	14.5 knots (26.9 km/h) (surfaced) 9.2 knots (17.0 km/h; 10.6 mph) (submerged)
Range	3,500 nautical miles (6,500 km; 4,000 mi) at 9 knots (17 km/h; 10 mph) (surfaced) 75 nmi (139 km; 86 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Test depth	80 m (260 ft)
Complement	43
Armament	6 × 550 mm (22 in) torpedo tubes (4 × bow, 2 × stern) 1 × 100 mm (3.9 in) gun 1 × 40 mm (1.6 in) anti-aircraft gun

Osvetnik (Avenger) was the first of the Osvetnik-class diesel-electric submarines built by Ateliers et Chantiers de la Loire, Nantes, France for the navy of the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia). She was launched in 1929, and was built to a partial double hull Simonot design similar to the French Circé-class submarines. She was armed with six 550 mm (22-inch) torpedo tubes, one 100 mm (3.9 in) gun, and one 40 mm (1.6 in) anti-aircraft gun, and could dive to 80 metres (260 ft).

Prior to World War II she participated in several cruises to Mediterranean ports. During the German-led Axis invasion of Yugoslavia in April 1941, she was captured by Italian forces at the Bay of Kotor. Initially designated N1, her armament was changed and her conning tower modified. Due to her age and shallow diving depth, when she was commissioned into the Royal Italian Navy as Francesco Rismondo; her service was limited to training and experimentation. She was scuttled off the island of Corsica by the Germans shortly after her capture in September 1943 following the Italian surrender.