DICTIONARY OF

Longitude 207 Looming
Longitude. Intercepted arc of Equator, or angle at Pole, between the prime meridian and the
meridian passing through a named position.
Longitude Star. Star whose position has been accurately determined and tabulated, so that it
can be used for ascertaining longitude.
Longitudinal. Pertaining to longitude, or length. Applied to any fore and aft member of a
ship's structure.
Longitudinal Bulkhead. Bulkhead going fore and aft in a vessel.
Longitudinal Framing. Framing, of a vessel's hull, that goes fore and aft instead of
transversely.
Longitudinal Stress. Stress that tends to deform the longitudinal form of a vessel or
member.
Long Jaw. Said of a rope when the cantlines of strands lie at an i angle that is appreciably
less than 45° from the run of the rope.
Long Period Species. Tidal species that occur at intervals greatly p exceeding a tidal day.
The most common are those with 14 days I and 19-year periods.
Long Period Variable. Star whose magnitude varies during a period between 50 days and
two years or more. Majority have I a period of about 300 days. Mira, in constellation Cetus,
varies • between magnitudes 3.5 and 9.0 in 350 days.
Longship. Norse warship c. 900 A.D. Rowed 40 to 50 oars and had one mast and square sail.
Longshore Man. Labourer on a wharf or dock side.
Long Splice. Splice that joins two ropes and can reeve through a block. Strand of each rope
displaces a strand in the other, for a distance equal to about six times size of rope; end is then
tucked. Remaining strand of each rope is half knotted to opposite strand.
Long Stay. Said of a cable of anchored vessel when amount of cable out is more than four
times depth of water.
Long Tackle Block. Two sheaves, one above the other, in a long shell. Diameter of upper
sheave is one-and-a-half times that of ' lower sheave. Used with a single block to form a
purchase.
Long Timber. Single timber rising from cant timbers to top of , second futtock.
Long Waisted. Said of a vessel having a long waist between poop and topgallant forecastle.
Loof* That part of a ship that lies between the stem and the part I. of ship's side that is
parallel to keel. Sometimes called 'bluff' of the bows.
Look Out. Man posted to keep a continuous look out, and to report anything sighted. 2. The
duty performed by a look out man.
Loom. To appear in sight. 2. The reflection of a light in the sky when the light itself is
hidden below the horizon. 3. Indistinct but enlarged appearance due to mist. 4. The end part
of an oar forming a hand-grip when feathering and rowing. Sometimes defined as all that
part of the oar that is inside the rowlock.
Looming. Appearing unusually large due to mist or fog.