On 1 October 1942, the Soviet M-class submarine M-118 attacked and sank the German transport ship Salzburg, which was carrying on board 2,000 Soviet prisoners of war.

After attacking, the submarine was located by a German BV 138C flying boat, and the Romanian gunboats Sublocotenent Ghiculescu and Stihi Eugen were sent to the scene.

The two Romanian warships attacked the Soviet submarine with depth-charges, sinking her with all hands.

[1][2][3] Recent surveys in the area failed to find the wreck in the alleged sinking location and it has been raised the alternative version that M-118 was lost due to a German seaplane attack[4] or from a Romanian field barrage "S-30".

[5] At the same time, one source reported that two Soviet submarines were sunk by Romanian surface units.