There are many different types of rope used for running rigging, sheets and braces on sailing boats. They can be made from many different materials, including polyester, Perlon, Nylon, Spectra and Dyneema. Halyards are usually multi-layered ropes with a core made of Dyneema or other high-strength synthetic fiber. This core is then protected by sheath layers made of softer and more UV-resistant fibers. Length A sailboat halyard rope is a rope that pulls the sail up to the mast. It can be a short 20-foot length of basic 5mm line…