August 1967. The Varna. Photo from the archives of А. Andreev.

Country: Bulgaria.
Class, [Type]: Whiskey ( Project 613 ), [SS].

Builder: Black Sea Shipyard, Nikolaev, USSR.
Launch date: 20 April 1956.
Commission date: 15 October 1958.
Decommission date: 28 August 1972.

Displacement ( tons ): 1080 surfaced, 1350 submerged.
Dimensions ( metres ): 76 x 7,3 x 4,4.
Main machinery: 2 x 37D diesels ( 4000 hp ), 2 x PG-101 electric motors ( 4000 hp ).
Speed ( knots ): 18,2 surfaced, 14 submerged.
Complement:65 (5 officers).
Test depth ( м ): 200.

Torpedoes: 6 x 1 533mm torpedo tubes ( 4 bow, 2 stern ); 12 toprpedoes or 22 АМD-1000 mines.

Comment: Ex-Soviet NAVY S-245.