USCG Exam Practice · Twin-screw vessel handling
Under 33 CFR §164.11, the person directing the movement of a vessel must set speed with consideration for the vessel's tendency to squat and suffer impairment of maneuverability. Under which specific condition does this concern arise?
- AWhen the vessel is operating at speeds above the posted channel speed limit
- BWhen there is small underkeel clearance✓ correct
- CWhen the vessel is transiting a narrow channel with strong cross-current
- DWhen the vessel is operating in reduced visibility
Why B is correct
33 CFR §164.11(p)(3) specifically identifies the tendency of the vessel underway to squat and suffer impairment of maneuverability when there is small underkeel clearance as a factor the conning officer must consider when setting speed. Squat is a hydrodynamic effect that increases with speed in shallow water.
Cited:33 CFR §164.11
Drill more Twin-screw vessel handling questions
Every CaptainsGround answer cites the rule it tests — verified, not guessed. Try a free 5-question drill, no sign-up.
More practice questions
- According to 33 CFR §164.35, what maneuvering information must be prominently displayed…
- A vessel's nontank vessel response plan (VRP) geographic-specific appendix (GSA) must i…
- Under 33 CFR §164.35, a vessel fitted with lateral thrust propellers must have which of…
- Under 33 CFR §164.35, a vessel of 500 gross tons or more constructed on or after June 9…
- According to 33 CFR §164.35, the maneuvering information fact sheet displayed in the wh…
- According to the Inland Navigation Rules, a vessel aground shall exhibit, in addition t…