HMS M30
Ship Number
486
Vessel Type
Coastal Monitor
Built
Belfast
Slip Number
5
Launch Date
June 23, 1915
Delivered
July 9, 1915
Owner
Admiralty
Weight
360 grt
BP Length
170 feet
Breadth
31 feet
No. of Screws
Twin
Speed (approx)
10 knots
Propulsion
Triple expansion. Yarrow oil fuel 45 tons boilers. 400 hp (300 kW)
Official No.
Registered
Fate
Sank
HMS M30

HMS M30 was a Royal Navy M29-class monitor of the First World War.
 
The availability of ten 6 inch Mk XII guns from the Queen Elizabeth-class battleships in 1915 prompted the Admiralty to order five scaled down versions of the M15-class monitors, which had been designed to utilise 9.2 inch guns. HMS M30 and her sisters were ordered from Harland & Wolff, Belfast in March 1915. Launched on 23 June 1915, she was completed in July 1915.
 
Upon completion, she was sent to the Mediterranean. Whilst enforcing the Allied blockade in the Gulf of Smyrna, she came under fire from the Austro-Hungarian howitzer battery 36 supporting the Turkish, and was sunk on 14 May 1916.