The Mark 90 nuclear bomb, given the nickname "Betty", was a
It had a length of 10 ft 2 in (3.10 m), a diameter of 2 ft 7.5 in (0.80 m), and a weight of 1,243 lb (564 kg), and it carried a
A test of the Mark 90 was conducted in 1955, as Operation Wigwam.
All units were withdrawn from service by 1960.
On September 25, 1959, a United States Navy
A Mark 90 depth charge casing was lost and never recovered, but it was not fitted with an active