Navigation General · Passage Planning — Abort & Contingency
An 'abort point' identified during planning is the position beyond which the vessel:
- AMust increase to full speed
- BBegins fuel transfer
- CChanges watch officers
- DCan no longer safely turn back or abandon the approach and must commit✓ Correct
Explanation
The abort point is the last position at which the planned approach can still be aborted (e.g., insufficient room to turn around afterward). Beyond it the vessel is committed, so contingency plans must be made for what happens past that point.
Authority: Bridge procedures guidance; IMO Res A.893(21)
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
- Dead Reckoning
A vessel departs a known position at 0800 on course 090°T at 12 knots. What is the DR position at 1100?
- Time-Speed-Distance
Using the 60 D = S × T formula, how long will it take a vessel traveling at 15 knots to cover 45 nautical miles?
- Time-Speed-Distance
A vessel travels 90 nautical miles in 6 hours. What is the vessel's speed?
- Dead Reckoning
Which of the following is the best definition of a Dead Reckoning (DR) position?
- Set & Drift
A vessel steers 000°T at 10 knots for 2 hours. The observed position shows the vessel is 4 nm east of the DR position. What is the set and drift of the current?
- Set & Drift
A current has a set of 225°T and a drift of 2 knots. Over 3 hours, how far and in what direction will this current displace a vessel from its DR position?