Country: Bulgaria
Class, [Type]: Koni, [FF].
Builder: Krasny Metallist Zavod, Zelnodol´sk, Russia.
Launch date: 21 April 1973.
Commission date: 01 June 1991.

Displacement ( tons ): 1.670 full load.
Dimensions ( metres ): 95,51 x 12,55 x 5,72 ( sonar )
Main machinery: CODAG: 1 x M-813 gas turbine ( 18.000 hp ), 2 x Type 68B diesels ( 8.000 hp ).
Speed ( knots ): 27, 22 on diesels.
Range ( miles ): 1.800 at 14 knots.
Complement: 96.

Guns: 2 x twin 76.2mm/59 AK-726, 2 x twin 30mm/65 AK-230.
Missiles:  SAM: 1 x Osa-M ( SA-N-4 ), 20 x 9M-33 Gecko missiles.
Mines: 14, in lieu of depth charges.
A/S Mortars: 2 x RBU-6000 ( 120 x RGB-60 rockets ), 2 x depth charges racks.

Radar: Surface/Air search: 1 x MR-302 ( Strut Curve ); Navigation: 1 x Don-2; Fire Control: 1 x MPZ-301 ( Pop Group ) for SAM, 1 x MR-105 Turel´ ( Hawk Screech ) for 76.2mm gun, 1 x MR-104 Rys´ ( Drum Tilt ) for 30mm gun.
Sonar: MG-322T Vychegda, hull-mounted, medium frequency.
Countermeasures: Decoys: 2 x PK-16 decoy launchers; EW: 2 x Bizan´-4B ( Watch Dog ) ( intercept ).

Comment: Ex - soviet Del´fin. Transferred in November 1991 after having been used by the Soviet Navy in the Black Sea for training foreign crews for export units of the class.