Guy and preventer placement. Each guy or preventer shall be
placed to prevent it from making contact with any other guy, preventer,
Guys. When alternate positions for securing guys are provided,
the guys shall be so placed as to produce a minimum stress and not
permit the boom to jackknife.
Boom placement. The head of the midship boom shall be spotted
no farther outboard of the coaming than is necessary for control of the
*Preventers shall be properly secured to
suitable fittings other than those to which the guys are secured, and
shall be as nearly parallel to the guys as the fittings will permit.
Unless the cleat is also a chock and the hauling part is led
through the chock opening, the leads of preventers to cleats shall be
such that the direction of the line pull of the preventer is as
parallel as possible to the plane of the surface on which the cleat is
Guys and associated preventers shall be adjusted to share the
load as equally as possible where cargo operations are being conducted
by burtoning. Exception: Where guys are designed and intended for
trimming purposes only, and the preventer is intended to do the
function of the guy, the guy may be left slack.
Cargo falls. Cargo falls under load shall not be permitted to
chafe on any standing or other running rigging. Exception: Rigging
shall not be construed to mean hatch coamings or other similar
structural parts of the vessel.
Where a bull wire is taken to a winch head for
lowering or topping a boom, the bull wire shall be secured to the winch
head by shackle or other equally strong method. Securing by fiber rope
fastening does not meet this requirement.
When, in lowering or topping a boom, it is not possible to
secure the bull wire to the winch head, or when the topping lift itself
is taken to the winch head, at least five turns of wire shall be used.
Trimming and deckloads. When deck loads extend above the rail
and there is less than 12 inches (30.48 cm) horizontal clearance
between the edge of the deck load and the inside of the bulwark or
rail, a pendant or other alternate device shall be provided to allow
trimming of the gear and to prevent employees from going over the side.
[62 FR 40101, July 25, 1997; 65 FR 40945, June 30, 2000]