A lubber line is a fixed line on a compass binnacle or radar plan position indicator display pointing towards the front of the ship or aircraft and corresponding to the craft`s centerline (being the customary direction of movement). The line represents 0 degrees and is therefore the zero-point from which relative bearings are measured, e.g., `tw.....
Found on
http://en.wikipedia.org/wiki/Lubber_line
A mark on a compass to assist in the reading of the heading.
Found on
http://www.diy-wood-boat.com/Boating-terms.html
A mark or permanent line on a compass indicating the direction forward parallel to the keel when properly installed
Found on
http://www.sailinglinks.com/glossary.htm
A line fixed to the forward end of a compass bowl. It corresponds to the nose of an aeroplane and enables the pilot to determine the direction in which the aeroplane is heading at any time.
Found on
https://www.encyclo.co.uk/local/20784
No exact match found.
