Heave Ho & Up She Rises . . .
This isn’t the safest way up the mast but I use two triple purchase blocks (expensive if you get good ones) and a lot of line. One block is hoisted via the main halyard to the top of the mast. The other end of that halyard is secured like it’s holding up a sail, only with some extra double half hitches for past transgressions. The Bosun's Chair hangs from a two foot leader (Type 7 parachute harness webbing) that hangs from the other block. I can then hoist and lower myself quite easily this way. I use another line around the mast when I stop. I also use the Jib halyard as a backup. The only tricky part is having to make fast the hauling line while maintaining some tension on it. I saw another set up that had a rope clutch arrangement, but I think I’d still make a knot somewhere . . . There’s a need to maintain some tension on the whole contraption to prevent tangles, especially offshore. You also need to control the running end of the hauling line, a rope bag works, because if it fouls when you’re up there . . . I’ve also seen people just use their traveler gear in a pinch. (If it’s beefy enough.)However you do it, be careful, carry a knife, and always have a Plan B. Nick“Julia Bell” C-27, #86