A predetermined geographical position defined by latitude and longitude coordinates, used as a reference point for navigation and route planning. Waypoints are connected sequentially to form a planned voyage route.
Category: Navigation & Seamanship
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Rhumb LineA line on the earth's surface that crosses all meridians at the same angle, appearing as a straight line on a Mercator projection chart.Speed Over GroundThe speed of a vessel relative to the earth's surface, as measured by GPS or other positioning systems.StarboardThe right-hand side of a vessel when facing forward (toward the bow).SternThe rear-most part of a vessel's hull where the rudder and propeller are typically located.TransitThe passage of a vessel through a canal, strait, or narrow waterway.True NorthThe direction along the earth's surface toward the geographic North Pole, as opposed to magnetic north.
Back to DictionaryEntry updated May 2026