The Marinervídeo
Preventers | What You Need to Know
4 de fevereiro de 2025 · 56 min · 33K visualizações
O que este vídeo aborda
Wraps of Dyneema around the boom end — not a mid-boom pad eye — is the attachment method Chris advocates for preventers on cruising and racing boats.21:43 The discussion is anchored by a physical exhibit: a destroyed tack fitting from Challenger, a Whitbread 60, which failed during Antigua Race Week around 2016 when a jib car downhaul with roughly 20,000-lb breaking strain peeled the G10 backing plate and Kevlar deck laminate without the line itself parting.4:20 Chris uses that failure to make a central point: any fitting will eventually fail under sufficient load, so preventer geometry — specifically running the line as far forward and outboard as possible to achieve the widest angle — matters more than raw hardware strength.4:30 He draws a direct analogy to spinnaker pole after-guys and tall-ship braces: tight rigging angles multiply loads catastrophically.13:43 On stretch, he calculates that a 60-ft preventer line at 5% elongation produces roughly 3 ft of give, which becomes dangerous if the boat is knocked down and the line must be eased under load — a process he describes as explosive if uncontrolled.16:01 For solo sailors, he recommends leading the mainsheet through a companionway cam cleat with only two or three turns on the winch so a sleeping crew member can dump tension instantly.19:15 Preventers that do not run to the bow are ineffective regardless of attachment strength.23:53
Mais de The Mariner
De The Mariner — veja o barco, a tripulação e todos os vídeos analisados do canal.
The Sailing Directory Newsletter
Um email com os melhores achados da frota — os momentos, barcos e histórias que valem o seu tempo de visualização. Insira o seu endereço para receber a sua cópia.