What indicates a vessel's intention to leave another vessel to starboard at night?

When a vessel intends to leave another vessel to starboard at night, it signals its intention by displaying two short flashes of light. This is a standard signaling practice established by the navigation rules, which helps ensure clarity and safety on the water. The two flashes indicate a specific maneuver, allowing other vessels to understand the captain's intention and coordinate their actions accordingly.

Understanding these signals is crucial for safe navigation, as they promote awareness of vessel movement and intentions. Each signal has a defined meaning, allowing mariners to quickly interpret the actions of nearby vessels. Hence, recognizing the significance of the two flashes is essential for maintaining safe distances and preventing collisions at night, when visibility is reduced.