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LANDING SHIP —A large seagoing ship
designed for landing large numbers of personnel
and heavy equipment directly on a beach.
LANYARD —(1) Any short line used as a
handle or as a means for operating some piece
of equipment. (2) A line used to attach an article
to a person, as a pistol lanyard.
LASH —To secure an object by turns of line,
wire, or chain.
LASHING —Line, wire, or chain used to lash
an article.
LASH-UP —An uncomplimentary term applied
to a rig, device, or system meaning it is in disorder.
For example, “What a lash-up they have there.”
LAUNCH —(1 ) To float a vessel off the ways
in a building yard, (2) A power boat, usually over
30 feet long.
LAY —(1) To go to a specific place, such as
“Lay aloft.” (2) To put something down, as to
lay tile. (3) The direction of twist of the strands
in a line or wire.
LEAD LINE —A narrow block of lead
weighing from 7 to 14 pounds attached to a
marked line. Used by leadsman to determine
depth of water.
LEADSMAN —Person who uses the lead line.
LEE —An area sheltered from the wind;
downwind.
LEE HELMSMAN —A spare helmsman who
usually operates the annunciator. Formerly
referred to the helmsman who stood on the lee
side of the wheel.
LEE SHORE —A shore that is leeward of the
ship.
LEEWARD —(Pronounced loo-urd). Side of
the ship opposite the direction from which the
wind is blowing.
LIBERTY —Permission to be absent from a
ship or station for a short time.
LIE OFF —To heave to at some distance from
shore.
LIFE BUOY —A buoyant ring or some other
floating device, except a life jacket or life belt,
designed to support a person in the water.
LIFE JACKET —A buoyant, sleeveless jacket
designed to support a person in the water;
different from a life belt, which fits only around
the waist.
LIFELINE —(1) In general, the lines erected
around the edges of weather decks. Specifically,
the topmost line. From top to bottom, the lines
are named lifeline, housing line, and footrope.
(2) A safety line bent to a person going over the
side or aloft.
LIGHTEN SHIP —To make a ship lighter by
removing weight.
LIGHT SHIP —The act of dispensing with
blackout precautions.
LINE —Any rope that is not wire rope.
LOG —(1) A ship’s speedometer. (2) The act
of a ship in making a certain speed, as “The ship
logged 20 knots.” (3) Book or ledger in which data
or events occurring during a watch are recorded.
LOOK ALIVE —Admonishment meaning “be
alert” or “move faster.”
LOOKOUT —Person stationed topside as a
formal watch who reports all objects sighted and
sounds heard to the OOD.
LOOM —The glow seen in the sky from a light
that is below the horizon.
LUBBER’S LINE —Line engraved on the
inside of a compass bowl, representing the ship’s
head, by which the ship’s course is steered.
LUCKY BAG —Locker, under the charge of
the master-at-arms, used to stow gear found adrift
and deserters’ effects.
MAGAZINE —Compartment used for the
stowage of ammunition.
MAIN DECK —The uppermost complete
deck.
MAINMAST —Second mast aft from the
bow.
AI-9
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