Mark 90 nuclear bomb
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Mark 90 nuclear bomb
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Operation Wigwam test of a Mark 90 "Betty"
The Mark 90 nuclear bomb, given the nickname "Betty", was a cold war nuclear depth charge, developed by the United States in 1952.
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 Mark 7 nuclear warhead with a yield of 32 kilotons. Its purpose was to serve as an anti-submarine weapon for the United States Navy.
A test of the Mark 90 was conducted in 1955, as Operation Wigwam.
All units were withdrawn from service by 1960.
Accident[edit]
On September 25, 1959, a United States Navy Martin P5M-2 Marlin (BuNo 135540, SG tailcode, '6', of VP-50) was patrolling out of NAS Whidbey Island when it was forced to ditch in the Pacific Ocean, about 100 miles west of the Washington-Oregon border.
A Mark 90 depth charge casing was lost and never recovered, but it was not fitted with an active warhead.[citation needed] The ten crew members were rescued by the US Coast Guard, after ten hours in a raft. The press was not notified at the time.[1]
References[edit]
^ Gibson, James N. Nuclear Weapons of the United States - An Illustrated History . Atglen, Pennsylvania.: Schiffer Publishing Ltd., 1996, Library of Congress card no. 96-67282, .mw-parser-output cite.citationfont-style:inherit.mw-parser-output qquotes:"""""""'""'".mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
ISBN 0-7643-0063-6, Chapter 12, "Nuclear Anti-Submarine Weapons", page 214.
External links[edit]
- Official Defense Department film on 1955 underwater test of Mark 90 nuclear depth charge
Categories:
- Cold War anti-submarine weapons of the United States
- Depth charges
- Nuclear bombs of the United States
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