What alarm color indicates a collision warning on a ship?

The color yellow is commonly used to indicate a collision warning on a ship. This alarm serves as a cautionary alert to the crew, signifying that there is a potential risk of an impending collision with another vessel or an obstacle. The adoption of yellow for collision warnings is part of the standardized maritime communication protocols, which are designed to enhance safety at sea.

In this context, yellow signifies that immediate attention is required, and prudent action should be taken to avoid a collision. This can involve maneuvering the vessel or preparing to respond to the situation proactively. Understanding this signaling system is crucial for maintaining safe navigation and ensuring crew readiness in potential collision scenarios.