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 TB 55-1900-232-10
Snapback
The sudden recoil occurring when a line parts.
Snatch block
A type of fairlead which can be broken easily to insert a bight of line.
Socket
A wire rope termination attached by zinc or resin. Sockets poured with resin are not approved for towing. See
"Poured socket."
Spanish windlass
A device to exert force in bringing together two parts of a rope for any purpose, shortening a pair of parallel lines
by twisting them with a lever inserted between them at a right angle to their axis.
Spelter socket
See "Poured socket."
Splay
To unlay and broom the bitter end of a wire rope, usually done preparatory to attaching a socket.
Spliced eye
See "Eye splice."
Spooling
Winding a rope on a reel or drum.
Spring
A mooring or docking line leading ashore from a vessel at an angle of less than 45 degrees to the vessel's fore-
and- aft lines. Used to turn a vessel or prevent it from moving ahead or astern.
Spring lay rope
A rope combining fiber and wire.
Spring line
See "Spring."
Spring, stretcher
A pendant or grommet used to dampen towline surges.
Starboard
The right-hand side of a ship when looking forward. Opposite of "port."
Static load
The force applied by deadweight, often referred to as the "average" or "mean" load.
Steady tension
The average or mean tension experienced by the tow hawser, approximated by calm water resistance.
Stem
The forward extremity of a ship's hull.
Stern
The aftermost section of a ship.
Stern line
A mooring line leading from the stern of a vessel.
Stern rollers
The horizontal and vertical rollers at the stern of a tug used to lead, capture and control the tow hawser.
Stopper hitch
Two rolling hitches backed up with half- hitches to secure lines or wire.
N-12
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