This guide by professional skipper and Yachting Monthly Tech editor Fox Morgan shows how to climb a mast solo using a single line after securing yourself. Fox has to go up on her own quite often, and this method is the quickest and safest way to do it. For safety, she usually uses two lines: the main halyard and the second halyard. She also uses a loop and prusik knot as her backup line. This technique is for masts with internally routed halyards and a turning block at the top. If the sheeve giv