Seafarers tie knots everyday. From mooring, securing to working aloft, those jobs won’t be complete without the use of ropes. And because we use ropes in many forms and sizes on ships, knot tying is a skill every seaman must learn. Even my 65-year old Captain knows how to tie knots effortlessly. So...
https://www.seamanmemories.com/10-widely-used-knots-merchant-ships/