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United States' M15 and M15A1 Multiple Gun Motor Carriage

Photos

M15 Multiple Gun Motor Carriage used in North Africa
United States' M15 Multiple Gun Motor Carriage U.S. Army in World War II - Pictorial Record, 1951

Design

The M15 was to replace the M13 and M14 as they weren't meeting expectations.2

The M15 was made from a M3 Half Track chassis. It had the rear compartment removed and the M42 multiple gun mount was mounted on the flat bed.2 The guns could rotate a full 360°.2

Armament

The 37 mm could fire 40 rounds per minute and the MGs 500 rounds per minute.2

The M15 had a 37 mm M3E1 and two .50 cal MGs in a combined mount.

37 mm gun had ceiling of 6,200 yards, range of 8,875 yards. The .50 cal MGs had range of 7,200 yards.

Production

  • M15: 6002
    • Manufacturer: Autocar
    • Production: February 1943 - April 19432
  • M15A1: 1,6522
    • Manufacturer: Autocar2
    • Production: October 1943 - February 19442

Variants

  • M15: Used a M6 Sighting System. Entered service in May 1943.2
  • M15A1: Used M54 gun mount.2 37 mm M1A2 Gun in a M3A1 Gun Carriage with a M5 Sighting System. Was lighter and had lower silhouette than M15. Platform provided for the loader and lead setter. Rail is provided at rear to help crew get into gun mount. There was more room for the crew.2

Usage

M15

The M15 was used in Sicily, Italy, and north western Europe.2

M15A1

The M15A1 was used in Italy and north western Europe.2

Post World War II

The M15s were used in the Korean War and remained in service until the late 1950s.2

Specifications

  M15
Crew 72
Physical Characteristics  
Weight 10 tons2
Length 20' 3"2
6.14 m2
Height 8'2
2.44 m2
Width 8' 2"2
2.49 m2
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 37 mm M1A22
Secondary  
MG 2: 0.5" Browning MG2
2: 12.7 mm Browning MG2
Side arms  
Quantity  
Main 2402
Secondary  
MG 3,4002
Side arms  
Armor Thickness (mm) 0.5"2
12.7 mm2
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) White 160AX2
Cylinders 62
Net HP 1282
Transmission  
Fuel type Gasoline2
Octane  
Capacity  
Performance  
Traverse 360°2
Speed - Road 45 mph2
64 kph2
Speed - Cross Country  
Range - Road 200 miles2
280 km2
Speed - Cross Country  
Turning radius  
Elevation Limits  
Fording depth  
Trench crossing  
Vertical Obstacle  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Track length  
Tires  
Track width  
Track centers/tread  
  M15A1
Crew 7
Physical Characteristics  
Weight 20,800 lb
Length 20' 3.5"
Height 7' 10"
Width 7' 4.5"
Ground clearance 11 3/16"
Ground contact length 3' 10.75"
Ground pressure  
Turret ring diameter  
Armament  
Main 37 mm M1A2
Secondary  
MG 2: M2 .50
Side arms 4: .30 cal Carbines
Quantity  
Main 200
Secondary  
MG 1,200
Side arms  
Armor Thickness (mm)  
Hull Front, Upper 6
Hull Front, Lower 6
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front 6
Turret Sides 6
Turret Rear  
Turret Top  
Engine (Make / Model) White 160AX
Cylinders  
Net HP  
Transmission  
Fuel type  
Octane  
Capacity  
Performance  
Traverse 360°
Speed - Road  
Speed - Cross Country  
Range - Road  
Speed - Cross Country  
Turning radius  
Elevation Limits -5° to 85°
Fording depth  
Trench crossing  
Vertical Obstacle  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Track length  
Tires  
Track width  
Track centers/tread  

Sources:

  1. -
  2. World Encyclopedia of Armored Fighting Vehicles, Jack Livesey, 2006
20th Century American Military History Crucial Site