A lubber line is a fixed-line displayed on a
The line represents 0 degrees and is therefore the zero-point from which relative-bearings are measured, e.g., "twenty-degrees to port".
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lubber line — noun a fixed line on a ship s compass indicating its heading • Syn: ↑lubber s line, ↑lubber s mark, ↑lubber s point • Hypernyms: ↑reference point, ↑point of reference, ↑reference * * * … Useful english dictionary
lubber line — The reference line of a magnetic compass, directional gyro, or cathode ray tube to indicate the nose of the aircraft. The heading is shown on the card or dial opposite the lubber line … Aviation dictionary
lubber line — noun Date: 1858 a fixed line on the compass of a ship or airplane that is aligned with the longitudinal axis of the vehicle … New Collegiate Dictionary
lubber line — noun a line on a compass, showing the direction straight ahead … English new terms dictionary
lubber line — /ˈlʌbə laɪn/ (say lubuh luyn) noun a datum line on an instrument, as a compass, radar screen, etc., which represents the fore and aft axis of the aircraft, ship, etc., and from which navigational bearings are taken …
lubber's line — n. a fixed mark or line on a compass, aligned with the bow of a ship (or aircraft) and used as by the helmsman in steering a course: also lubber line … English World dictionary
lubber's point — noun a fixed line on a ship s compass indicating its heading • Syn: ↑lubber s line, ↑lubber line, ↑lubber s mark • Hypernyms: ↑reference point, ↑point of reference, ↑reference * * * noun … Useful english dictionary
lubber's mark — noun a fixed line on a ship s compass indicating its heading • Syn: ↑lubber s line, ↑lubber line, ↑lubber s point • Hypernyms: ↑reference point, ↑point of reference, ↑reference * * * … Useful english dictionary
lubber's line — Navig. a vertical line on the forward inner side of the bowl of a fixed compass, used as a reference mark indicating the heading of a vessel. Also, lubber line. Also called lubber s mark, lubber s point. [1855 65] * * * … Universalium
lubber's line — noun a fixed line on a ship s compass indicating its heading • Syn: ↑lubber line, ↑lubber s mark, ↑lubber s point • Hypernyms: ↑reference point, ↑point of reference, ↑reference … Useful english dictionary
