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the habakkuk project arose out of a problem that the British and the other allies to be fair faced in the early part of the Second World War u-boats were of course causing problems by sinking merchant ships even those in convoys and even with Americaamp;#39;s entry into World War two there was the so-called mid-atlantic gap here u-boats could operate with great effectiveness as they were out of range of land-based aircraft from either side of the Atlantic air cover in the mid-atlantic would drastically curtail the effectiveness of these submarines but there were a few problems with implementing this fleet carriers were in short supply and would in any case be a prime target they also could not recover and launch larger twin or 4 engine patrol craft which would be the most efficient way to cover large areas of ocean and even a fleet carriers hull carried relatively few operational supplies compared to the fuel needs of running dozens of patrol flights every day for week