What action should be taken if there is any doubt about the risk of collision?

When there is any doubt about the risk of collision, it is crucial to use all available means to assess and determine that risk. This principle emphasizes the importance of thorough situational awareness and taking proactive measures to ensure safety at sea. Utilizing navigational aids, radar, and visual observations together provides a more comprehensive understanding of the surrounding maritime environment.

It is imperative for mariners to actively seek information and not to make assumptions that may lead to dangerous situations. By thoroughly assessing the risk, operators can make informed decisions about actions such as changing course or speed to avoid a potential collision. This adherence to a proactive safety culture aligns with the COLREGs, which prioritize the prevention of collisions through proper navigation practices.

Using visual observations alone or assuming there is no risk could lead to miscalculation and potential accidents. Waiting for other vessels to signal does not promote proactive navigation and could result in a delayed response that increases the chance of a collision. Hence, continuously evaluating and using multiple sources of information is critical for safe maritime operations.