M1 American 240mm Towed Howitzer
M1
Towed Gun
Other



Basic Information
Name
M1 American 240mm Towed Howitzer
Designation
M1
Alternate Designation
M1; "Black Dragon"
Equipment Type
Towed Gun
Manufacturer
—
Date of Introduction
1950
Description
The M1 American 240mm Towed Howitzer popularly nicknamed the "Black Dragon", 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M1 was designed to replace the World War I era 240 mm howitzer M1918, which was based on a 1911 French design and was outdated by World War II.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 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 is still in service with Taiwan, stationed in hardened bunkers of the frontline Kinmen and Matsu Islands.
Ground Specifications
Crew
14
System
Alternate Designation
M1; "Black Dragon"
Type
Towed Howitzer
Caliber
240 mm
Manufacturer
INA
Crew
14 ea
Transport
A pair of three-axle, six-wheeled transport wagons were developed – one for the cannon tube, and one for the carriage. These transport wagons were also used with the 8-inch gun. These were standardized as the M2 and M3. The M2 wagon carried the carriage and the M3 wagon carried the barrel and recoil system. This separate configuration required the use of the 20-ton M2 truck-mounted crane for setup. The crane also included a clam-shell bucket that was transported on a trailer and used to dig the recoil pit for the gun. It took about two hours to emplace the gun.
Self-Propelled Mount
The 240 mm howitzer M1 was broken down into two loads for travel (the barrel and recoil mechanism and the carriage), each towed on a six-wheeled wagon by a Mack NO 7½-ton 6x6 truck or another heavy prime mover such as the M33 or M35. A truck-mounted crane was required to assemble and disassemble the weapon. Due to the problems with moving such a large, heavy weapon, a self-propelled version was made by mounting it on a stretched Heavy Tank T26E3 chassis that featured an extra bogie wheel per side, as the T92 Howitzer Motor Carriage, While 115 were planned, only five were built and the war ended before they could be used and they were later scrapped.
Breech
Interrupted screw
Carriage
Split trail with 2 transport wagons
Recoil
Hydro-pneumatic
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
701 m/s
Maximum Firing Range
23.1 km
Note
The 240 mm howitzer M1 is still in service with Taiwan, stationed in hardened bunkers of the frontline Kinmen and Matsu Islands.
Dimensions
Length
INA
Barrel Length
8.38 m
Width
2.79 m
Weight, Combat
29,300 kg
Ammunition
Shell
160 kg separate loading, bagged charge
Caliber
240 mm
Details
Country of Origin
United States
Category
Towed Gun/Howitzer Artillery Systems
Land > Artillery > Towed Gun/Howitzer Artillery Systems
Filter Label
M
Classification
Domain
Ground
Equipment Status
Active
Dimensions
Length
—
Width
2.79 m
Height
—
Weight
29300 kg
Operators (1)
Taiwan
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