BOTH INTERNATIONAL & INLAND You are approaching another vessel. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you. She then sounds a whistle signal of five short blasts. You should __________.

Correct Answer: Option A — make a large course change, and slow down if necessary

Under Inland Navigation Rules, for the condition where 'You are approaching another vessel. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you. She then sounds a whistle signal of five short blasts. You should', the correct requirement is: 'make a large course change, and slow down if necessary'. This standard ensures clear navigational intent and collision avoidance.