1921 - Loss of Submarine K5
20th January. Submarine K5, sank off Lands End with loss of her crew of 57; 33 were from Portsmouth.
The submarine was participating in the Atlantic Fleet exercises. She was last seen at 1144 hrs when she dived. When she failed to surface in the afternoon a search was mounted. A large oil slick was found with wooden wreckage later the following morning, the lid of a ditty box was found belonging to one of the crew. It was presumed she dived below her safe diving depth of 187 ft.