USCG Exam PracticeRule 6 — Safe Speed
At night, which factor related to safe speed must every vessel take into account under 33 CFR §83.06?
- A. The effect of current on the vessel's turning circle
- ✓ The presence of background light such as from shore lights or from back scatter of her own lightsCorrect
- C. The number of vessels detected by radar within two miles
- D. The draft in relation to the available depth of water only when in a narrow channel
Why B is correct
33 CFR §83.06(a)(iv) specifically identifies the presence of background light at night, including shore lights and back scatter of the vessel's own lights, as a factor all vessels must consider. Draft versus depth of water applies at all times, not only in narrow channels, and radar-related factors apply only to vessels with operational radar.
Cited:33 CFR §83.06