Convertisseur de Relèvement Nautique Gratuit
Convertissez les relèvements nautiques entre différents systèmes. Outil pour la navigation maritime et les calculs de cap.
°
Quadrant
3
Reciprocal Bearing45 °
Magnetic (West US, -14° decl.)239 °
Formule
Nautical Bearings
Three-Figure Bearing
Bearings are always given as three digits measured clockwise from north: 000° to 360°.
Quadrants
Reciprocal Bearing
The opposite direction: add 180° (or subtract if over 180°). Used to find the return course.
Exemple Résolu
Analyze bearing 225°.
- 01Quadrant 3 (180°-270°): Southwest
- 02Reciprocal = 225 - 180 = 045° (Northeast)
- 03Approximate magnetic (-14° West US) = 239°
Questions Fréquentes
What is a reciprocal bearing?
The bearing in the exact opposite direction. If you are heading 225° (SW), the reciprocal is 045° (NE). Used to navigate back the way you came.
What is magnetic declination?
The difference between true north and magnetic north at your location. In the western US it is about 10-15° east (add to true bearing for magnetic). In the eastern US it is 10-20° west (subtract).
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