"Challenger 3" diesel crawler tractor produced by John Fowler and Co to satisfy requirements of Royal National Lifeboat Institution; powered by 95 bhp Meadows engine; tractor has to haul lifeboat and carriage, weighing nearly 20 tons, over beaches involving steep gradients consisting of wet and dry sand, mud and shingle.
Immersible tractor
Engineer
Engineer ; 196 , n 5101
1953
Article (Journal)
English
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