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USCG Exam Practice · Rule 3 — General Definitions

Under the Inland Navigation Rules, a vessel is considered 'underway' when she is in which condition?

  1. AMaking way through the water under her own power
  2. BNot at anchor, not made fast to the shore, and not aground✓ correct
  3. CMoving at any speed relative to the water
  4. DSecured to a buoy or mooring in a designated anchorage

Why B is correct

33 CFR §83.03(i) defines 'underway' as a vessel that is not at anchor, or made fast to the shore, or aground. Making way is not required; a vessel can be underway while stopped in the water.

Cited:33 CFR §83.03(i)

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