Italian submarine Tembien

History
Kingdom of Italy
Name	Tembien
Namesake	Tembien
Builder	OTO, Muggiano
Laid down	6 February 1937
Launched	6 February 1938
Commissioned	1 July 1938
Fate	Sunk, 2 August 1941
General characteristics
Class and type	600-Serie Adua-class submarine
Displacement	680 long tons (691 t) surfaced 844 long tons (858 t) submerged
Length	60.28 m (197 ft 9 in)
Beam	6.45 m (21 ft 2 in)
Draught	4.64 m (15 ft 3 in)
Installed power	1,400 hp (1,000 kW) (diesels) 800 hp (600 kW) (electric motors)
Propulsion	Diesel-electric 2 × FIAT diesel engines 2 × Marelli electric motors
Speed	14 knots (26 km/h; 16 mph) surfaced 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range	3,180 nmi (5,890 km; 3,660 mi) at 10.5 kn (19.4 km/h; 12.1 mph) surfaced 74 nmi (137 km; 85 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	80 m (260 ft)
Complement	44 (4 officers + 40 non-officers and sailors)
Armament	1 × 100 mm (4 in) / 47 caliber deck gun 2 x 1 – 13.2 mm (0.52 in) anti-aircraft guns 6 × 533 mm (21 in) torpedo tubes (4 forward, 2 aft) 12 × torpedoes

Italian submarine Tembien was an Adua-class submarine built for the Royal Italian Navy (Regia Marina) during the 1930s. It was named after a Tembien region of Ethiopia, where Italian troops fought two battles against more numerous Ethiopian troops during the Second Italo-Ethiopian War.