Submarine warfare in the Black Sea campaigns (1943)

Submarine warfare in the Black Sea in World War II
Part of the Black Sea Campaigns of the Eastern Front of World War II
Shch-209 alongside the Soviet cruiser Komintern
Date 1943 Location Western and Eastern Black Sea Result Inconclusive Limited Soviet success
Belligerents
Romania  Germany  Italy  Bulgaria	Soviet Union
Strength
6 German U-boats 5 Italian midget-submarines Anti-submarine forces	29 submarines Anti-submarine forces
Casualties and losses
4 German merchants sunk 1 German tanker sunk 6 German barges sunk, 1 damaged 1 German tug sunk 1 Romanian merchant sunk 1 Romanian barge sunk 1 Bulgarian merchant sunk	3 submarines sunk 2 minesweeper sunk, 1 damaged 2 patrol boat sunk, 1 damaged 2 landing crafts sunk 1 merchant sunk 1 tanker lost, 3 damaged
3 neutral Turkish vessels sunk

Submarine warfare in the Black Sea in World War II during 1943 involved engagements between submarines of the Soviet Black Sea Fleet attacking Axis merchantmen defended by Romanian and German naval warships, as well as and German U-boats attacking Soviet merchants on the eastern Black Sea. These engagements were a part of the Black Sea campaigns between Axis and Soviet naval forces.