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Non-Proliferation: British Nuclear Weapon Trainer

The British WE177 was manufactured in three different variants, A, B and C. Weighing 600 to 950 pounds the three variants of the nuclear weapon, that also had different nuclear yields, were stockpiled between 1966 and 1998. The 112' to 133' long WE177s could be parachute retarded or used in a free fall mode with a number of different delivery and fuzing options.

Most United Kingdom (UK) strike aircraft of the period 1966 to 1998 could deliver all the WE177 models. The WE177A could also be dropped from most UK Naval helicopters in its role as depth bomb.

The original agreement was signed between the two countries in Washington, D.C. on July 3, 1958.

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National Atomic Museum.