USCG Exam Practice · Rule 15 — Crossing Situation
On the Western Rivers, Vessel X is crossing the river and Vessel Y is ascending the river. Risk of collision exists. Which vessel must keep out of the way under Inland Rule 15?
- AVessel Y, because ascending vessels have the right-of-way on Western Rivers
- BVessel X, because a vessel crossing a river must keep out of the way of a vessel ascending or descending the river✓ correct
- CVessel X, because she has Vessel Y on her starboard side
- DVessel Y, because descending vessels have the right-of-way on Western Rivers
Why B is correct
33 CFR §83.15(b) provides that on the Great Lakes, Western Rivers, or waters specified by the Secretary, a power-driven vessel crossing a river shall keep out of the way of a power-driven vessel ascending or descending the river. This overrides the standard starboard-side rule of §83.15(a) in this specific situation.
Cited:33 CFR §83.15
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