Coracle

The coracle is a small, roundish shaped, lightweight boat of the sort traditionally used in Wales but also in parts of Western and South West England, Ireland (particularly the River Boyne), and Scotland (particularly the River Spey); the word is also used of similar boats found in India, Vietnam, Iraq and Tibet. The word "coracle" comes from the Welsh cwrwgl, cognate with Irish and Scottish Gaelic currach, and is recorded in English as early as the sixteenth century. Other historical English spellings include corougle, corracle, curricle and coricle.

Oval in shape and very similar to half a walnut shell, the structure is made of a framework of split and interwoven willow rods, tied with willow bark. The outer layer was originally an animal skin such as horse or bullock hide (corium), with a thin layer of tar to make it fully waterproof – today replaced by tarred calico or canvas, or simply fibreglass. The Vietnamese/Asian version of the coracle is made somewhat differently: using interwoven bamboo and waterproofed by using resin and coconut oil. The structure has a keel-less, flat bottom to evenly spread the weight of the boat and its load across the structure and to reduce the required depth of water – often to only a few inches, making it ideal for use on rivers.

Each coracle is unique in design, as it is tailored to the river conditions where it was built and intended to be used. In general there is one design per river, but this is not always the case. The Teifi coracle, for instance, is flat-bottomed, as it is designed to negotiate shallow rapids, common on the river in the summer, while the Carmarthen coracle is rounder and deeper, because it is used in tidal waters on the Tywi, where there are no rapids. Teifi coracles are made from locally harvested wood – willow for the laths (body of the boat), hazel for the weave (Y bleth in Welsh – the bit round the top) – while Tywi coracles have been made from sawn ash for a long time. The working boats tend to be made from fibreglass these days. Teifi coracles use no nails, relying on the interweaving of the laths for structural coherence, whilst the Carmarthen ones use copper nails and no interweaving.

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Wikipedia