Italian submarine Smeraldo information

History
Kingdom of Italy
Name	Smeraldo
Builder	Cantieri navali Tosi di Taranto, Taranto
Laid down	1931
Launched	27 July 1933
Fate	Lost, September 1941
General characteristics
Class and type	Sirena-class submarine
Displacement	691 t (680 long tons) (surfaced); 850 t (837 long tons) (submerged);
Length	60.18 m (197 ft 5 in)
Beam	6.45 m (21 ft 2 in)
Draft	4.7 m (15 ft 5 in)
Installed power	1,350 bhp (1,010 kW) (diesels); 800 hp (600 kW) (electric motors);
Propulsion	2 shafts; diesel-electric; 2 × diesel engines; 2 × electric motors;
Speed	14 knots (26 km/h; 16 mph) (surfaced); 7.5 knots (13.9 km/h; 8.6 mph) (submerged);
Range	5,000 nmi (9,300 km; 5,800 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced); 72 nmi (133 km; 83 mi) at 4 knots (7.4 km/h; 4.6 mph) (submerged);
Armament	1 × single 100 mm (3.9 in) deck gun; 2–4 × single 13.2 mm (0.52 in) machine guns; 6 × 533 mm (21 in) torpedo tubes (4 bow, 2 stern);

Smeraldo was one of a dozen Sirena-class submarines, the second sub-class of the 600 Series of coastal submarines built for the Regia Marina (Royal Italian Navy) during the early 1930s.

Italian submarine Smeraldo information

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History

Kingdom of Italy
Name	Smeraldo
Builder	Cantieri navali Tosi di Taranto, Taranto
Laid down	1931
Launched	27 July 1933
Fate	Lost, September 1941
General characteristics
Class and type	Sirena-class submarine
Displacement	691 t (680 long tons) (surfaced) 850 t (837 long tons) (submerged)
Length	60.18 m (197 ft 5 in)
Beam	6.45 m (21 ft 2 in)
Draft	4.7 m (15 ft 5 in)
Installed power	1,350 bhp (1,010 kW) (diesels) 800 hp (600 kW) (electric motors)
Propulsion	2 shafts; diesel-electric 2 × diesel engines 2 × electric motors
Speed	14 knots (26 km/h; 16 mph) (surfaced) 7.5 knots (13.9 km/h; 8.6 mph) (submerged)
Range	5,000 nmi (9,300 km; 5,800 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced) 72 nmi (133 km; 83 mi) at 4 knots (7.4 km/h; 4.6 mph) (submerged)
Armament	1 × single 100 mm (3.9 in) deck gun 2–4 × single 13.2 mm (0.52 in) machine guns 6 × 533 mm (21 in) torpedo tubes (4 bow, 2 stern)