Experimental Submarine


M Class

Pennant No.:

Laid Down:
13th July 1916.
Vickers, Barrow-in-Furness.

14th February 1920.
Cdr. C.R.Y. Dering DSO.

Feb. 1919
Cdr. C.R.Y. Dering DSO.
July 1921
Lt. Cdr. A.G. Hine DSO.
Lt. Cdr. J. D. de M. Leathes.

6 Officers and 62 Ratings.

Service Career:
July 1920
Submarine School Portsmouth.
1920 - 1921
5th Flotilla, HMS Alecto, Gosport.
1921 - 1922
1st Flotilla, HMS Royal Arthur, Rosyth.
1922 - 1927
1st Flotilla, HMS Cyclops, Chatham.
1928 - 1932
5th Flotilla, HMS Alecto, Gosport (Experimental Wing).

To conform with the Washington Disarmament Treaty of 1920 the 12 inch gun was removed.

She was refitted with a seaplane hangar replacing the gun and a catapult to launch a small Parnall Peto seaplane.

Lost during exercises off Portland 26th January 1932. It was believed she had dived with both inner and outer hangar doors open though the cause was never disclosed.

Over the years M2 has been dived on by many divers who have reported that she is on an even keel and in such condition that she looks as though she may burst into action at any time.

The wreck of M2 is used in the training of sonar operators.