HMS E24 was an E-class submarine of the Royal Navy built by Vickers, Barrow-in-Furness.

British E-class submarines had fuel capacities of 50 long tons (51 t) of diesel and ranges of 3,255 miles (5,238 km; 2,829 nmi) when travelling at 10 knots (19 km/h; 12 mph).

Divers hunting for a Second World War-era U-boat in 1973 raised sections of a mined submarine wreck, including the conning tower.

Human remains found in the wreck are buried in Ohlsdorf Cemetery, Hamburg.

Lieutenant-Commander Naper was identified because of the 2+half rings on sleeve, and the fact that his skeleton was 6 ft tall.

The sunken wreck lay at a downward angle, causing the heads to become detached from the bodies and to roll down the slope into that position.

Artefacts from E24 and her crew, such as smoking pipes belonging to Naper, a bottle of blackberries, the sextant, a firing pistol and boots are on display at Cuxhaven, as are the submarine's conning tower and propellers.