Knots and Splices Types of Rope Fibres Types Of
Knots and Splices Types of Rope Fibres Toronto Brigantine • Traditionally made from manila hemp, Grade II hemp, linen, cotton, coir, jute, and sisal. • Most rope is now made from synthetic fibers such as polypropylene, nylon and dacron. Most of the images in this lecture are from the following eBook (copyright expired) Knots, Splices and Ropework. A. Hyatt Verrill http://www.gutenberg.org/files/13510/13510-h/13510-h.htm 1 2 Types of Rope fibres Rope Making • Many fibres (A) are twisted together to form yarn (B) • Polypropylene: Stiff, hard to work with, hard on the hands, very little • Many yarns are twisted together to form strands (C) stretch, easily damaged by UV and heat, Floats • Strands are twisted together to form rope (D) •Nylon: • Rope is twisted together to form cable (E) easy to work with, looses shape, easy on the hands, doesn’t float, can stretch up to 40% of its length, weak when wet • Dacron: easy to work with, maintains shape, easy on hands, doesn’t float, not as stretchy as nylon •Roblon: Synthetic material (from Denmark) that looks like natural fiber, used on replica vessels Knots, Splices and Ropework. A. Hyatt Verrill http://www.gutenberg.org/files/13510/13510-h/13510-h.htm 3 4 Rope Making Traditional Rope Making • The direction the strands are twisted • Rope was made in a rope walk or ropery together is called the lay; either right or left • A traditional operational ropery remains in • The twist of the yarn is opposite to that of Chatham England. It is 346m (1135 ft) the strand, and that in turn is opposite to long, and when constructed was the that of the rope.
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