Maretron knowledge base - glossary
Maretron Knowledge Base :: Glossary
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Word Description
latitude The distance north or south of the equator measured and expressed in degrees.
lazarette A storage space in a boat's stern area.
lee The side sheltered from the wind.
leeward The direction away from the wind. Opposite of windward.
leeway The sideways movement of the boat caused by either wind or current.
line Rope and cordage used aboard a vessel.
line of position (LOP) In Loran or Decca navigation systems, a vector obtained by measurement of the time difference between the receipt of the master and slave signals which is then used to selected a corresponding LOP from a chart or table. Two or more intersecting LOPs are required to obtain a position fix.
listener In the NMEA 0183 standard, the recipient of messages across an interconnecting link.
log An instrument for measuring the speed or distance or both traveled by a vessel.
longitude The distance in degrees east or west of the meridian at Greenwich, England.
LOP Line of Position. In Loran or Decca navigation systems, a vector obtained by measurement of the time difference between the receipt of the master and slave signals which is then used to selected a corresponding LOP from a chart or table. Two or more intersecting LOPs are required to obtain a position fix.
Loran The general designation of one group of radionavigation systems by which a hyperbolic line of position is determined through measuring the difference in the times of reception of synchronized pulse signals from two fixed transmitters.
lubber's line A mark or permanent line on a compass indicating the direction forward parallel to the keel when properly installed.

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