Navigation General · Piloting & Bearings
What is a danger bearing?
- AThe bearing to a hazard when it is directly ahead
- BA limiting bearing beyond which a vessel must not go to safely clear a hazard✓ Correct
- CA bearing taken to determine the distance off a shoal by vertical sextant angle
- DThe reciprocal of a vessel's true course when navigating in restricted waters
Explanation
A danger bearing is a bearing to a charted object that defines the limiting safe track. The bearing is labeled NMT (Not More Than) or NLT (Not Less Than) to indicate which side of the bearing is safe. The vessel must keep the object's bearing on the correct side of that limit.
Authority: Bowditch (Pub. 9), Ch. 8
Practice the full Navigation General bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Navigation General questions
- Piloting & Bearings
A navigator takes simultaneous bearings: Lighthouse A bears 000°T, Lighthouse B bears 090°T. The intersection of these two LOPs gives a:
- Piloting & Bearings
Which geometric arrangement of three simultaneous LOPs gives the most reliable three-bearing fix?
- 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:
- Piloting & Bearings
Using the bow-and-beam bearing method, a vessel runs 6 nm between taking a 45° bow bearing and the abeam bearing on the same lighthouse. What is the approximate distance off the lighthouse when it is abeam?
- Piloting & Bearings
When doubling the angle on the bow, the first relative bearing is 30° and the second is 60°. The vessel ran 4 nm between bearings. What is the distance from the vessel to the lighthouse at the second bearing?
- Piloting & Bearings
A vessel is on course 000°T and observes a lighthouse bearing 045°T at 1200. At 1230, the vessel has run 5 nm and the lighthouse now bears 090°T. What is the distance off the lighthouse at 1230?