She was laid down at the Sir Raylton Dixon & Co. Ltd shipyard at Govan in March 1915, launched on 17 June 1915, and completed in July 1915.
M25 next saw service, along with five other monitors (M23, M27, M31, M33 and HMS Humber), which were sent to Murmansk in May 1919 to relieve the North Russian Expeditionary Force.
M27 next saw service, along with five other monitors (M23, M25, M31, M33 and HMS Humber), which were sent to Murmansk in May 1919 to relieve the North Russian Expeditionary Force.
M33 next saw service, along with five other monitors (M23, M25, M27, M31 and HMS Humber), which were sent to Murmansk in 1919 to relieve the North Russian Expeditionary Force.
HMS Beagle | HMS Victory | HMS M31 | HMS Bounty | ''M23'' | HMS M23 | HMS ''Humber'' | HMS ''Bounty'' | HMS M27 | HMS M25 | HMS Investigator | HMS M33 | HMS ''Beagle'' | HMS Plumper (1848) | HMS Endeavour | HMS ''Victory'' | HMS Royal Charles | HMS Queen Mary | HMS ''Plumper'' | HMS Britannia | HMS ''Investigator'' | HMS ''Express'' | HMS Duke of Wellington | HMS ''Britannia'' | HMS Ark Royal | Yangtse Incident: The Story of HMS Amethyst | HMS ''Winchelsea'' | HMS Volage | HMS ''Trincomalee'' | HMS Trincomalee |