World War II Vehicles, Tanks and Airplanes, picture of P-51 Mustang
World War II Vehicles, Tanks and Airplanes, picture of T-34/85
World War II Vehicles, Tanks and Airplanes, picture of Fw-190
World War II Vehicles, Tanks and Airplanes, picture of Churchill
wwiivehicles.com ©2016
Search:
Great Britain's flag

Great Britain's TOG Heavy Tank

Design

Sir Albert Stern, head of the Tank Supply Depot in World War I, was asked to form a committee, to address future tank designs, in July 1939. Other members of the committee were Sir E. Tennyson d'Eyncourt, General Swinton, Mr. Ricardo, and Major Wilson. They proposed that a heavy tank be designed and approached Sir William Tritton of Foster's of Lincoln to design it.
Members of the design team (The Old Gang) were: Stern, Wilson, Swinton, d'Eyncourt, Ricardo, Symes, and Tritton.

The TOG was designed to cross wide trenches.

The turret was designed by Stothert & Pitt of Bath.

With the Churchill's success, interest in the tank declined.

Prototypes

The prototype was completed in October 1940 and was called the TOG I (The Old Gang). The TOG II was competed in March 1941. During trials both of them were found to be very hard to steer because of the relation of length to width.

Variants

  • TOG I: Used a Matilda II turret.
  • TOG II: Fitted with a 76 mm (17 pdr.). Had 2 40 mm (2 pdr.) guns in sponsons in the hull. Machine guns were in sponsons and in the hull front.

Specifications

  TOG Heavy Tank
Crew 6, 8
Physical Characteristics  
Weight 30 tons
30,481 kg
Length 33' 3"
10.13 m
Height 10'
3.048 m, 3.05 m
Width 10' 3"
3.12 m
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 76 mm (17 pdr.)
75 mm OR 17 pdr
Secondary 2 pdr
2: 40 mm (2 pdr.)
MG 3: 7.7 mm or 7.92 mm Besa MG
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 50+25, 25, 75, 12 - 62
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) Paxman Ricardo
Ricardo
Bore / stroke  
Cooling  
Cylinders V-12
Capacity  
Net HP 600
Power to weight ratio  
Ignition  
Transmission (Type) Electric.
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Diesel
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse 360°
Speed - Road 8 mph, 8.5 mph
12.8 kph, 14 kph
Speed - Cross Country 4 mph
Range - Road 50 miles, 59 miles, 70 miles
81 km, 112.6 km
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing 12'
Vertical obstacle 7'
Climbing ability  
Suspension (Type) None, had rigid rollers.
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  TOG Heavy Tank I
Crew Driver, commander, gunner, loader, sponson gunners (4).
6
Physical Characteristics  
Weight 142,320 lb
63.5 tons
64,555 kg
Length  
Height  
Width  
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 75 mm howitzer
Secondary - turret 1: 2 pdr
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm)  
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)  
Bore / stroke  
Cooling  
Cylinders  
Capacity  
Net HP  
Power to weight ratio  
Ignition  
Transmission (Type) Electric
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road  
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  TOG Heavy Tank II
Crew Driver, commander, gunner, loaders (2), co-driver.
8
Physical Characteristics  
Weight 179,200 lb
80 tons
81,284 kg
Length  
Height  
Width  
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 1: 17 pdr OQF
OR 1: 6 pdr (77 mm)
Secondary 1: 6 pdr (77 mm)
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm)  
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)  
Bore / stroke  
Cooling  
Cylinders  
Capacity  
Net HP  
Power to weight ratio  
Ignition  
Transmission (Type) Hydraulic
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road  
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  

Sources:

  1. The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
  2. British and American Tanks of World War Two, The Complete Illustrated History of British, American, and Commonwealth Tanks 1933-1945, Peter Chamberlain and Chris Ellis, 1969
  3. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
  4. The Illustrated Guide to Tanks of the World, George Forty, 2006
  5. World War I and II Tanks, George Forty, 2012
20th Century American Military History Crucial Site