AJ-G The Dambusters  (617 Squadron)

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Lancaster Bomber

Specification


Lancaster Bomber Drawings

There were many types and variations of the Lancaster. The specifications below are those of the Lancasters used in the Dambusters raid. The Lancaster Mk III.

Manufacturer AVRO
Crew / Passengers 1 pilot and up to 6 crew
Power 4 x 1,620 hp Rolls-Royce Merlin 224 engines
Performance:
  Max Speed
  Cruising Speed
  Service Ceiling
  Range

272 mph (438 km/h)
200 mph (322 km/h)
24,700 feet (7,528 meters)
2,530 miles (4,072 km)
Weights:
  Empty
  Gross

35,240 pounds (15,999 kg)
60,000 pounds (27,400 kg)
Dimensions:
  Span
  Length
  Height
  Wing Area

102 feet (31.09 meters)
69 feet 6 inches (21.18 meters)
20 feet (6.10 meters)
1,297 square feet (120.49 square meters)
Armament 8 x 0.303 inch machine guns in nose, dorsal and tail turrets plus one 22,000 pound bomb or up to 18,000 pounds of smaller bombs

Avro Lancaster B Mk III Special Bomber

The Lancasters used by the dambusters were a special variant of the standard Lancaster specially modified by Lancaster designer Roy Chadwick to accomodate the special Upkeep weapon developed by Barnes Wallis. The new specially modified Lancaster was the:

Avro Lancaster B Mk III Special Bomber (Type 464 provisioning)

This specially modified version had the following alterations:

  • The bomb bay was modified to carry the special Upkeep weapon
  • Callipers and a belt driven system to rotate Upkeep backward were added to hold the weapon
  • The Mid Upper turret was removed to compensate for the large Upkeep weapon

Avro Lancaster B Mk III Special Bomber (Type 464 provisioning)
Avro Lancaster B Mk III Special Bomber (Type 464 provisioning)


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