RIDING LIGHT Light required to be shown
by a vessel at anchor.
RIG To set up any device or equipment, as
rig a stage over the side.
RIGGING Wires, ropes, and other lines
used to support masts and other topside structures
and to maneuver cargo. Standing rigging is used
to support a ships masts; running rigging is
used to hoist or otherwise move equipment.
RISER A pipe leading from the firemain to
fireplugs on upper deck levels.
ROLLER CHOCK A mooring chock that
contains a roller for reducing friction.
ROPE General reference to both fiber and
wire rope. Fiber rope usually is referred to as line;
wire rope is called rope, wire rope, or just wire.
ROPE YARN SUNDAY Free time given
during a workday (usually an afternoon) to allow
personnel to take care of personal business.
RUDDER Device attached to a ships stern
that controls the ships direction of travel.
RUNNER A purchase containing one single-
sheave movable block.
RUNNING BOWLINE A slipknot made by
tying a small bowline around a lines own standing
RUNNING LIGHTS Navigational lights
required to be shown at night by a vessel under
SCUPPER The waterway along the gunwales.
SCUTTLE (1) Round, watertight opening in
a hatch. (2) The act of deliberately sinking a
SCUTTLEBUTT (1) Originally a ships
water barrel (called a butt), which was tapped
(scuttled) by the insertion of a spigot from which
the crew drew their drinking water; now applied
to any drinking fountain. (2) In the old days the
scuttlebutt was a place for personnel to exchange
views and news when they gathered to draw their
water; hence, the term scuttlebutt is applied to any
SEA (1) The ocean in general. (2) The overall
undulations of the surface; individually they are
called waves, but as a whole they are referred to
as seas. A ship takes a big sea, not a wave, over
SEA ANCHOR A device streamed from the
bow of a vessel for the purpose of holding it
end-on to the sea.
SEAMANSHIP (1) The art or skill of
handling a vessel. (2) Skill in the use of deck
equipment, boat handling, and the care and use
of line and wire.
SEAWORTHY A vessel capable of with-
standing normal heavy weather.
SECOND DECK First complete deck below
the main deck.
SECURE (1) To make fast, as to secure a
line to a cleat, (2) To cease, as to secure from fire
SERVICE FORCE The organization pro-
viding logistic support to the combatant forces.
SET The direction toward which a ship is
pushed by the effects of wind and current. See
SET UP To tighten up, with particular
reference to dogs and turnbuckles.
SHAKE A LEG An admonishment to move
SHAKE DOWN The training of a new crew
to develop efficiency in operating a ship.
SHEAVE Pulley in a block around which
the fall (line) runs.
SHEER STRAKE The uppermost strake in
a ships side plating.
SHEET BEND Same as Becket Bend.
SHELL A vessels hull plating from the keel
to the main deck; also called skin.
SHELLBACK A person who has crossed the