What does one short blast indicate when maneuvering?

One short blast when maneuvering indicates that a vessel is turning to starboard. This signal is part of the sound signals outlined in the International Regulations for Preventing Collisions at Sea (COLREGs). The purpose of these sound signals is to convey specific intentions between vessels to enhance navigational safety, especially in situations where visibility may be compromised.

When a power-driven vessel is making a maneuver such as a turn, it uses sound signals to inform other vessels of its actions. A single short blast clearly communicates the intention of a starboard turn. This helps other nearby vessels anticipate changes in the movement of the signaling vessel, thereby allowing them to act accordingly to maintain safe distances and avoid potential collisions. Other sound signals exist to communicate different intentions, such as turning to port, stopping, or reversing, each with distinct meanings to ensure clarity and safety on the water.