USCG Exam Practice · Leeway allowance in plotting
A vessel is navigating in a traffic separation scheme. When crossing a traffic lane, the vessel should cross on a heading that is:
- AParallel to the general direction of traffic flow
- BAs nearly as practicable at right angles to the general direction of traffic flow✓ correct
- CAt as small an angle to the general direction of traffic flow as practicable
- DAt approximately 45 degrees to the general direction of traffic flow
Why B is correct
33 CFR §83.10(c) states that a vessel obliged to cross traffic lanes shall do so on a heading as nearly as practicable at right angles to the general direction of traffic flow. Option C describes the requirement for joining or leaving a lane, not crossing it.
Cited:33 CFR §83.10
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