What is the optional sound signal for a vessel at anchor?

The vessel at anchor is required to use a specific sound signal to indicate its location and status to other vessels. The correct optional sound signal for a vessel at anchor consists of one prolonged blast followed by one short blast and then another prolonged blast. This sequence is important as it communicates the vessel’s position clearly, especially in poor visibility conditions, ensuring safety on the water.

The use of sound signals is a critical component of navigation rules, as they help prevent collisions by allowing other vessels to determine the presence of an anchored vessel. Each element of the sound signal has distinct meanings and helps maintain situational awareness among mariners. Understanding these signals is essential for safe navigation and compliance with maritime regulations.