The yorkshire coble (pro cobble) is a fishing boat unique to the north east coast of England. Many peopls say the shape has evolved from the Viking boats. The one I have drawn is of a sailing coble which for a fishing boat were quite fast and could easily beat the first boats to be fitted engines, to the fishing grounds. The sail is a "dipping lug sail" which when tacking had to be lowered and put to the other side of the mast.
They were designed to be launched off the shallow sandy beaches and were beached stern first hence the flat bottomed shape of the stern. The long rudder is to counteract the shallow stern and the deep forefoot in heavy seas to stop them broaching and capsizing.
Mike
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