Harken 2234 Bosun's Chair - Manual (Page 9)

03/11/13 Bosun's Chair — Sailboat 9
SAILING Tying to Bosun's Chair
Tightly cinch all four strands of rope exiting
the knot.
Continue tracing figure 8.
SAILING
WARNING! Attempting to free jams on winch drum without stopper or second halyard can result in jam
suddenly freeing, leading to a fall. Suspended person must secure to mast while freeing jam so there
are two lifting ropes.
WARNING! Do not rely solely on stoppers for holding person aloft.
Stoppers or clutches may slip suddenly, leading to a fall. Always keep
halyard wrapped on winch when using stopper.
Hoisting
When using halyards to hoist person aloft, ensure they are securely held and locked off. Always keep halyards wrapped
securely on winches. Halyards must be wrapped three or more times around winch and line secured in self-tailing
jaws. Stoppers must be closed when hoisting person aloft and when they hold someone in place for working.
Lowering
When lowering a person, keep at least three halyard wraps on a primary and backup winch. Two people must
work together, one in charge of lowering using one winch, the other with line securely wrapped on backup winch.
To prevent line jams and overrides, carefully align wraps on winch so that one does not overlap another. If jam
occurs, close stoppers. Use backup winch halyard to take up tension and free override or line jam. Have aloft
worker temporarily secure themself to mast. If lowering to new hoisted working position, carefully close
stoppers and keep halyards wrapped on winches and secured in self-tailing jaws.
WARNING! Drilling through mast can weaken internal halyards
causing them to break. Avoid drilling where halyards are led.
Working Aloft
Do not drill through mast while suspended on halyard. Drill entering mast can
make contact with halyard and weaken it. Also see general use instructions.