What does one short blast from a whistle indicate?

One short blast from a whistle indicates the intention to pass another vessel on the port side. This is an important signal in maritime navigation, as it communicates to other boat operators how to position their vessels relative to each other in order to avoid collisions.

In the context of maritime rules, one short blast serves as a clear and standardized communication that helps maintain safety and order in busy waterways. Understanding this signaling system is crucial for all boat crew members to ensure effective communication on the water.

Options that suggest other meanings, such as leaving a vessel on the starboard side or indicating astern propulsion or a danger signal, do not align with the established convention for handling passing situations with other vessels. Each of these signals has different meanings in naval operations and navigation, but they do not correspond to the single short blast from a whistle, demonstrating the importance of understanding these specific communications at sea.