USCG Exam PracticeRule 16 — Action by Give-way Vessel
A power-driven vessel (Vessel A) is the give-way vessel in a crossing situation. Vessel A takes action but the vessels are now so close that collision cannot be avoided by Vessel A's action alone. What action is required of the stand-on vessel (Vessel B) at this point, and under which rule?
- A. Vessel B shall sound five short blasts and maintain course and speed; Rule 34.
- ✓ Vessel B shall take such action as will best aid to avoid collision; Rule 17(b) (33 CFR §83.17(b)).Correct
- C. Vessel B shall alter course to port to open the distance; Rule 17(c) (33 CFR §83.17(c)).
- D. Vessel B has no obligation to maneuver; Rule 16 places all responsibility on Vessel A.
Why B is correct
33 CFR §83.17(b) requires the stand-on vessel, when so close that collision cannot be avoided by the give-way vessel's action alone, to take such action as will best aid to avoid collision. Rule 17(c) (33 CFR §83.17(c)) actually restricts the stand-on vessel from altering course to port for a vessel on her own port side, making option C incorrect. Rule 16 (33 CFR §83.16) does not relieve the stand-on vessel of this last-resort duty.