S-520 Leonardo Da Vinci

Country:  Italy

Class, [Type]: Nazario Sauro, [SSK].

Builder: Italcantieri, Monfalcone, Italy.

Launch date: 20 October 1979.

Commission date: 06 November 1982.

Decommission date: 30 June 2010.

Displacement ( tons ): 1.456 surfaced, 1.631 submerged.

Dimensions ( metres ): 63,9 x 6,8 x 5,7

Main machinery: 3 x Fincantieri GMT 210.16 NM diesel-electric ( 3.350 hp ).

Speed ( knots ): 11 surfaced, 19 submerged, 12 snorkeling.

Range ( miles ): 11.000 at 11 knots surfaced, 250 submerged at 4 knots.

Complement: 49 ( 6 officers ) plus 4.

Torpedoes: 6 x 533mm. tubes. 12 x Whitehead A124 torpedoes.

Radar: Navigation/Search: SMA BPS 704, I band.

Sonar: Selenia Elsag IPD 70/S (active/passive), Selenia Elsag MD 100S (passive ranging flank array), Velox M5 (sonar intercept).

Countermeasures: ESM: Elettronica BLD 727 ( radar warning ).

Callsign: IALV ()

Comment: Refitted during 1993 - 1995.

Similar units:

 S518 Nazario Sauro
 S521 Guglielmo Marconi