HMS Conundrum

HMS Conundrum was the unofficial name given to the large drums used for laying the World War II Normandy landings PLUTO pipeline.^[1] The drums were cone-ended, hence the abbreviation CONUN and were used in the sea, hence subsequent ship HMS Conundrum nickname.^[2] They were 30 feet in diameter and weighed 250 tons.^[2][3][4][5]

Views of "HMS Conundrum" components

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  A Conundrum being moved into position into a specially constructed dock in preparation for the winding on of the pipe.
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  Pipe being wound onto a Conundrum, June 1944.
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  A Conundrum loaded with pipe, ready to be towed across the Channel.
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  A Conundrum being towed across the English Channel laying out pipe behind it.