Boating Coach US
Rules of the roadQuestion 187 of 352

A vessel must cross a traffic lane. At what angle should it cross?

  1. At a very small angle to the flow
  2. As nearly as practicable at right angles to the traffic flow
  3. Against the flow of traffic
  4. At any angle, if it is fast
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Correct answer: As nearly as practicable at right angles to the traffic flow

Crossing vessels head as near as possible at right angles to the traffic flow.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.10 Traffic separation schemes (Rule 10)

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Questions last reviewed: 18 October 2026