M2-class zeppelin LZ 32, given tactical number L 7, was a rigid airship operated by the Kaiserliche Marine, which flew 164 times, including 77 reconnaissance missions over the North Sea, with several unsuccessful attempts to attack English coastal towns.

Just as they were doing this HMS E31 was operating with the sea plane carrier Engadine in the North Sea in an air raid on the Zeppelin sheds at Tondern on 4 May 1916.

When the submarine put its periscope up, it observed that the Zeppelin was losing altitude after being hit by shells from Galatea and Phaeton.

E31 then surfaced just in time to get in the fatal shot and brought the Zeppelin down.

HMS E31 then proceeded to rescue seven survivors from the crew of LZ 32.