Hawthorn M-class destroyer
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|Builders:||Hawthorn Leslie and Company, Hebburn|
|Displacement:||1,057 long tons (1,074 t)|
|Length:||271 ft (83 m) o/a|
|Beam:||27 ft 6 in (8.38 m)|
|Draught:||10 ft 6 in (3.20 m)|
|Propulsion:||Yarrow-type boilers, steam turbines, 3 shafts, 27,000 hp (20,134 kW), 300 tons oil fuel|
|Speed:||35 knots (40 mph; 65 km/h)|
|Armament:||3 × QF 4 in (102 mm) Mark IV guns, mounting P Mk.IX
1 × single QF 2-pounder "pom-pom" Mk.II
2 × twin 21 in (533 mm) torpedo tubes
They were similar to the Admiralty M class, but completed to a modified design by Hawthorn Leslie and Company, Hebburn on Tyne. They had four funnels instead of the three funnels of the Admiralty design. The midships 4 inch gun was shipped between the second and third funnels. Both ships were laid down in 1914 and completed in 1915. Both survived the war.
Hawthorn Leslie subsequently received orders for two further M class destroyers as part of the large batch of orders placed in May 1915, but these two - Pidgeon and Plover - were built to the Admiralty M class design.
- Mentor, launched 21 August 1914, sold for breaking up 9 May 1921.
- Mansfield, launched 3 December 1914, sold for breaking up 26 October 1921.
- Destroyers of the Royal Navy, 1893-1981, Maurice Cocker, 1983, Ian Allan ISBN 0-7110-1075-7
- Jane's Fighting Ships, 1919, Jane's Publishing