USCG Exam PracticeRule 3 — General Definitions
A vessel is considered to be 'underway' under the Inland Navigation Rules when she is:
- A. Making way through the water under her own power
- ✓ Not at anchor, not made fast to the shore, and not agroundCorrect
- C. Moving at any speed relative to the bottom
- D. Proceeding under the direction of a licensed master
Why B is correct
33 CFR §83.03(i) defines 'underway' as a vessel that is not at anchor, not made fast to the shore, and not aground. A vessel can be underway even if she is not making way through the water; the definition does not require movement.
Cited:33 CFR §83.03(i)