During synchronous rolling, what is the correct action to take while underway?

When dealing with synchronous rolling, taking multiple corrective measures is crucial for maintaining vessel stability and safety. Synchronous rolling occurs when two or more vessels are affected by wave patterns in a way that causes them to roll in unison. This can lead to a significant increase in the risk of capsizing if not addressed properly.

By implementing a combination of corrective measures, such as adjusting the vessels' speed, changing course gradually, and utilizing ballast adjustments, the master can effectively mitigate the effects of the rolling. This approach addresses the issue from multiple angles, making it more likely to stabilize the vessel and prevent excessive rolling.

Simply stopping the vessel or changing course sharply may not resolve the problem and could potentially worsen the situation. Reducing speed alone might not be sufficient, as rolling can still persist if the wave patterns continue to exert their influence. Therefore, a comprehensive strategy that encompasses various corrective actions is optimal for dealing with synchronous rolling while underway.