BOTH INTERNATIONAL & INLAND When is a stand-on vessel in a crossing situation allowed to take action?
• Rule 17 - Action by stand-on vessel in the Navigation Rules • The normal duties of the stand-on vessel and the give-way vessel in a crossing situation • What "apparent" failure by the give-way vessel means in practice
• Ask yourself: Under the Rules, must the stand-on vessel act early, immediately, or only after seeing something specific about the give-way vessel’s behavior? • Which options describe a condition of risk of collision versus just distance, time, or relative motion with no clear failure yet? • Which choice best matches the wording and intent of Rule 17, especially the part that talks about when the stand-on vessel may take action?
• Re‑read Rule 17 (a) and (b) carefully and separate what the stand-on vessel shall do from what it may do. • Check which options talk about the other vessel’s actions (or inaction) rather than just numerical values like distance or time. • Verify that the option you pick is tied to risk of collision and the give-way vessel’s failure to comply with the Rules, not just a convenient point to maneuver.
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