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Experiments in the use of explosives in sea ice

Published online by Cambridge University Press:  27 October 2009

Waldo K. Lyon
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Extract

An icebreaker is beset. Motion is impossible because of lateral pressure and packing in the surrounding ice. During the long hours of patient waiting for the pressure to subside, discussion on board often turns to the use of explosives as a means to break the ship free.

Type
Articles
Information
Polar Record , Volume 10 , Issue 66 , September 1960 , pp. 237 - 247
Copyright
Copyright © Cambridge University Press 1960

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References

page 238 note 1 The term “ice canopy” is used to connote the submariner's view of the sea ice cover above him and the protection it affords the submarine.

page 238 note 2 A 40 lb. nominal shaped charge contains 30 lb. of explosive in a metal case, having stand-off legs to set the charge at proper distance from the surface to be penetrated by the explosion.

page 244 note 1 A Bangalore torpedo is a demolition charge of 9½ lb. of amatol in a metal tube about 5 ft. long and 2 in. in diameter. This form of demolition charge is not necessary for ice demolition work and has the disadvantage of producing shrapnel.