HMS L24, British Royal Navy submarine in Portland Bill, England.
The L-class submarine measured 238 feet in length, with a beam of 23 feet and reached speeds of 17 knots on surface.
The vessel sank on January 10, 1924, following a collision with HMS Resolution during a naval exercise in the English Channel.
A memorial at St Ann's Church in Portsmouth Naval Base honors the 43 officers and crew members who perished in the incident.
The wreck lies 52 meters below sea level at coordinates 50°22.50′N 02°37.79′W and remains protected under the Military Remains Act.
The submarine's hydroplanes, found in hard dive position, indicate the crew attempted emergency maneuvers moments before the fatal collision.
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