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 TB 55-1900-232-10
Towing pad
Large padeye to which a towline may be attached.
Towing point
A device for attaching a towline to a ship.
Towing winch
A basic winch used in towing which stores, pays out and heaves m the towing hawser to compensate for
variations in towline tension.
Towline pull
See '"Towline tension."
Towline strength
The nominal breaking strength of the tow hawser.
Towline tension
The stress imparted to a towline during a towing operation
Traction winch
A multi-sheaved device that generates line tension. Tension is generated by friction between the line and
traction heads.
Tripping lines
A line used for capsizing and hauling in a sea anchor
Turnbuckle
A metal appliance consisting of a threaded link bolt and a pair of opposite-threaded screws, capable of being set
up or slacked off and used for setting up standing rigging or stoppers.
Two-blocked
Term describing when the two blocks of a block-and-tackle have been drawn together or tightened so that they
touch.
Underrider
The wire rope, chain or combination used as a pendant heavy enough to pass under a leading tow to a trailing
tow, at a sufficient depth not to foul on the leading tow.
Veer
To pay out chain.
Wallis brake
A wire brake used for keeping a steady load on a wire rope as it is installed on a drum
Winch
An electric, hydraulic or steam machine aboard ship used for hauling in lines, wire or chain.
Wire rope
Rope constructed of wire strands twisted together, as distinct from the more common, and weaker, fiber rope.
Wire rope pendant
A length of wire with a termination fitting at each end.
Worming
Filling the lays of line or wire before parceling.
XIPS wire
Extra Improved Plow Steel wire.
Yard tug
A term used to describe harbor tugs or tugs used in berthing operations-e-g., YTL, YTM and YTB Classes of
tugs.
N-14
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