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352 pages, Kindle Edition
First published September 5, 2019
It was no small task. The sail needed to measure 85 square metres; such a large piece of cloth required the fleece of 2,000 comparatively rare villsau and spaelsau sheep. Sorting the fibres took four people six months; spinning them into some 165,000 metres of yarn and then weaving them into a sail took more than two years. The sail needed to be strong enough to bear the brunt of Arctic gales, the tensioned pull of wind against rigging. Too heavy and it cannot be raised by hand; too light, and it cannot withstand the weather. It must flex enough to fill with air, but not bend so much, or be so flat, that it cannot propel the boat. The spinners' and the weavers' skills are paramount to ensure sailing success, twisting threads to just the right degree and weaving the resulting yarn into a cloth dense, flexible and strong. As they worked, Lightfoot and her team realized the importance of Viking women in producing these sails; the ships were truly a communal resource and responsibility. The resulting sail was able to propel a replica Viking ship around 10 per cent faster in an upwind direction than a modern sail (100).