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
Commanders and leaders
Unknown	Unknown
Strength
6 U-boats; 5 midget-submarines; Anti-submarine forces	29 submarines; Anti-submarine forces
Casualties and losses
4 merchants sunk; 1 tanker sunk; 6 barges sunk; 1 damaged; 1 tug sunk; 1 merchant sunk; 1 barge sunk; 1 merchant sunk	3 submarines sunk; 2 minesweeper sunk; 1 damaged ; 2 patrol boat sunk; 2 landing crafts sunk; 1 merchant sunk ; 1 tanker lost
	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.