Question

When shall the stand-on vessel change course and speed?

A.The stand-on vessel may change course and speed at any time as it has the right-of-way
B. After the give-way vessel sounds one blast in a crossing situation
C. When action by the give-way vessel alone cannot prevent collision
D. When the two vessels become less than half a mile apart

Answer 1

The stand-on vessel should change course and speed when action by the give-way vessel alone cannot prevent a collision, according to maritime navigational rules.

Step-by-step explanation:

When shall the stand-on vessel change course and speed? The correct answer is C. When action by the give-way vessel alone cannot prevent collision. In navigational rules, a stand-on vessel is to maintain its course and speed when it has the right-of-way. However, the stand-on vessel may take action to avoid a collision if it becomes apparent that the give-way vessel is not taking appropriate action or if a collision is imminent. This decision is governed by the International Regulations for Preventing Collisions at Sea, Rule 17, which provides guidance on this matter to ensure safety at sea.