When meeting another vessel head-on, what signal should your vessel exchange for compliance?

Answer: B — One short blast, alter course to starboard

When two vessels are meeting head-on, the International Rules of the Road specify that if one vessel wishes to indicate their intention to alter course to starboard, they should sound one short blast. This signal informs the other vessel of the intended maneuver, facilitating safe navigation and ensuring both vessels are aware of each other's actions. The requirement to alter course to starboard in a head-on situation is based on the principles of maritime navigation, which prioritize safety and predictability. By exchanging this signal, both vessels can agree on their actions to pass safely, typically resulting in a starboard-side-to-starboard-side passing, which is the standard practice in these scenarios. This method helps reduce confusion and the potential for collision. Understanding this signaling practice is essential for navigators, as it helps maintain order on the waterways, ensuring that both vessels can proceed safely and efficiently.