BOTH INTERNATIONAL & INLAND Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to port is within the channel and crossing your course. You must __________.

Correct Answer: Option A — not cross the channel if you might impede the other vessel

Under Inland Navigation Rules, for the condition where 'Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to port is within the channel and crossing your course. You must', the correct requirement is: 'do not cross the channel if you might impede the other vessel'. This standard ensures clear navigational intent and collision avoidance.