USCG Exam PracticeRule 6 — Safe Speed
The Inland Navigation Rules define 'restricted visibility' as any condition in which visibility is restricted by which of the following?
- A. Darkness, twilight, or the absence of navigational lighting
- ✓ Fog, mist, falling snow, heavy rainstorms, sandstorms, or any other similar causesCorrect
- C. Traffic density, background lighting, or radar interference
- D. Proximity of navigational hazards or shallow water conditions
Why B is correct
33 CFR §83.03(l) defines 'restricted visibility' as any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms, or any other similar causes. Darkness is not included in this definition; the other options conflate safe speed factors with the definition of restricted visibility.
Cited:33 CFR §83.03