Photo available.

Country: Germany.
Class, [Type]: Delfin (D), [MSB].

Builder: Varna, Bulgaria.
Launch date: 1941.
Commission date: 1941.
Decommission date: 19 December 1942.

Dimensions ( metres ): 14,5 x ? x ?.
Main machinery: 1 x internal combustion engine.
Speed ( knots ): 6,5.
Complement: 8.

Guns: 1 x 1 7,9mm machine gun.
Anti-mine equipment: Sweeps.
Comment: January 25, 1942 as a result of a storm sank in Burgas. January 26, 1942 was raised. August 14, 1942 was renamed to D-4, and later in the same month in BW-04. December 19, 1942 destroyed the Soviet aviation in Feodosia.