HMS M31 [SEP] manufacturer
HMS M31
HMS "M31" was an "M29"-class monitor of the Royal Navy.
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 "M31" and her sisters were ordered from Harland & Wolff, Belfast in March 1915. Launched on 24 June 1915, she was completed in July 1915.
Upon completion, HMS "M31"
, an alternate designation for the MGR-1 Honest John, a United States military rocket
- M31 missile, MLRS
- M31 is the pennant number for HMS "Cattistock", a Hunt-class mine countermeasures vessel
Other.
- M31 (New York City bus), a New York City Bus route in Manhattan
- "M31: A Family Romance", a novel by writer Stephen Wright
- Messier 31 (M31), a spiral galaxy also called the Andromeda Galaxy