Front view of a 240 mm howitzer firing into German held territory. Mignano area, Italy. January 30, 1944
Type
Howitzer
Place of origin
United States
Service history
In service
1943–1959 (United States) 1958–Present (Taiwan)
Used by
United States United Kingdom Philippines Taiwan
Wars
World War II Korean War Second Taiwan Strait Crisis
Production history
Designed
1940–1943
Produced
November 1942–1945
No. built
315 manufactured by 1945
Specifications
Mass
64,700 lb (29,300 kg) (in action)
Barrel length
27 ft 6 in (8.38 m) L/35
Width
9 ft 2 in (2.79 m)
Crew
14
Shell
360 lb (160 kg) separate loading, bagged charge
Caliber
240 mm (9.4 in)
Breech
Interrupted screw
Recoil
Hydro-pneumatic
Carriage
Split trail with 2 transport wagons
Elevation
+15° to +65°
Traverse
22.5° right and left.
Rate of fire
1 round per minute (maximum) 30 rounds per hour (sustained)
Muzzle velocity
2,300 ft/s (701 m/s)
Maximum firing range
14.3 mi (23.1 km)
The 240 mm howitzer M1, popularly nicknamed the "Black Dragon",[1] was a towed howitzer used by the United States Army. The 240 mm M1 was designed to replace the World War I era 240 mm howitzer M1918, which was based on a 1911 French design and was outdated by World War II.
The project to replace the M1918 began in 1941.[2] The 240 mm howitzer was the most powerful weapon deployed by US field artillery units during World War II, able to fire a 360 lb (160 kg) high explosive projectile 25,225 yards (23,066 m).[3] It was the largest field piece used by the US Army during the war except for naval ordnance adapted into railway guns.[4] The weapon addressed the requirement for super-heavy field artillery capable of attacking heavily reinforced targets, like those likely to be found along Germany's Siegfried Line.
The 240 mm howitzer M1 was designed together with the longer-ranged 8-inch gun M1, and they shared a related carriage.[3] While use of the 8-inch gun was limited due to excessive bore wear and poor accuracy, the howitzer saw considerable action during World War II in Europe due to its effectiveness against difficult targets such as heavy concrete fortifications. It was also used in the Pacific campaign, notably in the recapture of Manila in 1945, but few targets there were fortified heavily enough to justify its use.[5]
The US Army retained the 240 mm howitzer after World War II, and later deployed it in the Korean War. The howitzer remained in US service until ammunition stocks were exhausted in the late 1950s.[4]
The 240 mm howitzer M1 is still in service with Taiwan, stationed in hardened bunkers of the frontline Kinmen and Matsu Islands.
^"'Black Dragon' Italian Success" Archived 2012-02-05 at the Wayback Machine, T-Patch 36th Infantry Division News, Army times., Retrieved on 2007-05-25.
^The Illustrated Encyclopedia of 20th Century Weapons and Warfare, Vol 7, page 779, editor Bernard Fitzsimons, Purnell & Sons Ltd 1967/1969
^ abZaloga, Delf – US Field Artillery of World War II, p 34.
^ ab"M1 240 mm Howitzer", Globalsecurity.org, Retrieved on 2007-05-25.
^Schreier – Standard guide to U.S. World War II Tanks & Artillery, p 105.
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