A vessel is required by the Rules not to impede the passage of another vessel. Risk of collision subsequently develops between the two vessels. Which statement correctly describes the obligations of the vessel that must not impede?

1. ✓ She is not relieved of her obligation not to impede and must have full regard to the action required by Rules 4-19 when taking action.Correct
2. B. Once risk of collision exists, her obligation not to impede is superseded entirely by the give-way/stand-on rules.
3. C. She must immediately stop her vessel and wait for the other vessel to pass.
4. D. She becomes the stand-on vessel because the other vessel created the risk of collision.