Italian submarine Primo Longobardo (S 524)

	Primo Longobardo
History
Italy
Name	Primo Longobardo
Namesake	Primo Longobardo
Builder	Fincantieri, Monfalcone
Laid down	19 December 1991
Launched	20 June 1992
Commissioned	14 December 1993
Home port	La Spezia
Identification	Pennant number: S 524
Status	Active
General characteristics
Class & type	Sauro-class submarine
Displacement	1,653 tonnes (surfaced); 1,862 tonnes (submerged);
Length	66 m (216.5 ft)
Beam	6.83 m (22.4 ft)
Draught	6.3 m (20.7 ft)
Depth	300 m (984.3 ft)
Propulsion	3-shaft diesel Grandi Motori Trieste GMT 210.16-NM (2,7 mW); 1 electric engine ABB;
Speed	12 knots (22 km/h; 14 mph) (surfaced); 19 knots (35 km/h; 22 mph) (submerged);
Range	2,500 nmi (4,600 km; 2,900 mi) at 12 knots (22 km/h; 14 mph)
Complement	7 officers; 44 enlisted;
Sensors &; processing systems	1 x radar SMA MM/BPS 704-V2; 1 x sonar STN Atlas Elektronik – ISUS 90-20; Combat System STN Atlas Elektronik – ISUS 90-20; periscopes Kollmorgen; communication system IRSC, by Hagenuk Marinekommunikation; Submarine Action Information System SMA/Datamat MM/SBN-716 SACTIS; periscopes Barr & Stroud CK31 Search and CH81 Attack Periscopes; communication system by ELMER;
Electronic warfare; & decoys	ESM systems Elettronica Spa, BLD-727
Armament	6 × 533 mm (21 in) torpedo tubes with reloads for:; 1.) Black Shark torpedo Mod.3; 2.) Naval mines;

Primo Longobardo (S 524) is a Sauro-class submarine of the Italian Navy.