Navigation General · Piloting & Bearings
A vessel is on course 090°T. A lighthouse bears 045°T (45° on the port bow). Later, the same lighthouse bears 000°T (90° on the port beam). This is an example of:
- ADoubling the angle on the bow
- BA running fix using two bearings
- CBow-and-beam bearing✓ Correct
- DAdvancing an LOP
Explanation
Bow-and-beam bearing is the specific technique where the first bearing is 45° (four points) on the bow and the second is 90° (abeam). At the beam bearing, the distance off equals the distance run between the two bearings.
Authority: Bowditch (Pub. 9), Ch. 8
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