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TB 55-1900-232-10
Reclaiming device
The mechanism on a towing machine which aut matically recovers slack previously paid out.
The threading of a line or wire through a block, sheave, or other parts of a wire rope system
Reserve buoyancy
A measure of the capability of a ship to be flooded or ballasted without sinking.
A force that retards, hinders, or opposes motion.
Riding chocks
The chocks on deck through which the anchor chain or towing gear passes in-board.
Rockwell C
A measure of hardness on a caprail, Norman pin, etc.
Side-to-side motion of a ship about its longitudinal axis See also "pitch;' "sway" and "yaw:'
Roller chock
A chock fitted with a roller
A flexible, heavy cord of twisted hemp or other fiber.
Run out
To send out, as to run out a towing hawser
Safe Working Load
The load for which a rope, fitting or working gear is designed.
Safety factor
A multiple representing extra strength over maximum intended stress
Safety shackle
A connecting device similar to the common shackle except that the mortise is held closed by a nut and bolt.
Sag (sagging)
Deviation of the keel from a straight line when the keel is concave upward. Also, the concave curve of a towline
said to have catenary.
"Sally ship"
A term referring to the practice of imparting a rolling motion to a ship by the crew's repeatedly moving from one
side of the ship to the other.
Salvage towing
Towing a disabled ship
The amount of towline streamed
A large, open, usually flat-bottomed boat for transporting sand, gravel or mud.
Screw-pin shackle
A type of shackle in which the pin passes through one side of the shackle and threads into the other side of it to
form a closure.


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