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Total record count: 6269.

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Eng ID Term Definition
2721
leading line
(British terminology). A line passing through two or more clearly defined charted objects, and along which a vessel can approach safely.
2722
leading marks
(British terminology). AIDS TO NAVIGA­TION or other in­dicators so located as to indicate the path to be followed. Leading marks identify a ... more
(British terminology). AIDS TO NAVIGA­TION or other in­dicators so located as to indicate the path to be followed. Leading marks identify a LEADING LINE when they are in TRANSIT. See also RANGE.
2723
lead line
A line, graduated with attached MARKS and fastened to a SOUNDING LEAD, used for determining the DEPTH of water when making SOUNDINGS by hand... more
A line, graduated with attached MARKS and fastened to a SOUNDING LEAD, used for determining the DEPTH of water when making SOUNDINGS by hand. General­ly used in DEPTHS of less than 45 METRES (25 FAT­HOMS). Lead lines are braided or left-laid. Also called sounding line.
2724
lead line correction
A CORRECTION to be applied to the DEPTHS taken with a rope LEAD LINE to take into ac­count the shrinking and stretching. This difficulty has... more
A CORRECTION to be applied to the DEPTHS taken with a rope LEAD LINE to take into ac­count the shrinking and stretching. This difficulty has been overcome by insert­ing a wire heart in the rope.
2725
leadsman
A person using a SOUNDING LEAD to determine DEPTH of water.
2726
league
A varying measure of distance, usually about three MILES.
2727
leaper
See LIPPER.
2728
leap year
See YEAR: CIVIL.
2729
least count
The finest reading that can be made di­rectly (without estimation) from a VERNIER or MICRO­METER.
2730
least depth
The shoalest sounding value obtained on a feature.
2731
least squares
A method of adjusting OBSERVATIONS in which the sum of the squares of all the deviations or residuals derived in fitting the OBSERVATIONS to... more
A method of adjusting OBSERVATIONS in which the sum of the squares of all the deviations or residuals derived in fitting the OBSERVATIONS to a mathematical model, is made a minimum. Least squares have also been designated as minimum squares.
2732
ledge
A shelf-like projec­tion, on the side of a ROCK or MOUNTAIN. A rocky formation con­tinuous with and fringing the SHORE.
2733
lee
That side towards which the WIND blows; the shel­tered side.
2734
lee shore
SHORE that is to leeward of a vessel. See WEATHER SHORE.
2735
lee tide
See TIDE: LEEWARD.
2736
leeward
(adj. and adv.). Toward the LEE, or in the general direction toward which the WIND is blowing. The opposite is WINDWARD.
2737
leeward tidal current
See TIDE: LEEWARD.
2738
leeward tide
See TIDE.
2739
leeway
The leeward motion of a vessel due to WIND. It may be expressed as distance, SPEED, or angular difference between COURSE steered and COURSE ... more
The leeward motion of a vessel due to WIND. It may be expressed as distance, SPEED, or angular difference between COURSE steered and COURSE through the water. DRIFT ANGLE. Also called drift.
2740
leeway angle
The angle between true heading and track of a vessel caused by wind action.