What should vessels do when navigating less than half a mile from a storm?

When navigating less than half a mile from a storm, vessels should exercise caution and slow down. This is essential for several reasons. Storms can create rapidly changing conditions, such as strong winds, high waves, and decreased visibility, which can significantly affect a vessel's maneuverability and safety. By reducing speed, a vessel gives itself more time to react to sudden changes in the environment, such as encountering rough seas or other vessels.

Slowing down also allows for a better assessment of the situation, enabling the crew to make informed decisions about navigation and avoid potential dangers. Moreover, maintaining a slower speed reduces the risk of losing control of the vessel in adverse weather conditions. Proper caution is necessary to ensure the safety of both the crew and the vessel while navigating through or near stormy weather.

In contrast, maintaining speed, anchoring immediately, or following other vessels closely could lead to a variety of hazards. Staying at high speed may result in unsafe encounters with waves or reduce the time available for decision-making. Anchoring too close to a storm could leave a vessel vulnerable to dragging anchor due to wind or wave action, while closely following other vessels might impede one's ability to maneuver effectively in a changing environment.