On January 21, 1915, U 22 sank U 7 in a friendly-fire incident, with U 22 only realizing the submarine it had torpedoed was also German when the sole survivor from U 7 was pulled aboard.

Does anyone have the name the crewman of U 7 that was rescued? I haven't come across it anywhere, including in a summary of the inquest into the sinking.

Thanks in advance,
Michael