One of Plymouth's best wrecks the Elk is 108ft and 181 Tonne. originally a trawler she was requisitioned during the war as a minesweeper.
She hit a mine in November 1940 and sunk within an hour.
Today she is relatively intact in 32M upright, with the bow facing NW.
You can get into the fish hold and engine room.
The Elk is at 50.18.30, 04.10.17
Facts about HMS Elk