What is required on every vessel at all times?

A lookout is required on every vessel at all times to enhance the safety of navigation and proactively avoid collisions or other dangers. The presence of a lookout helps to maintain situational awareness, allowing the crew to detect hazards such as other vessels, navigational markers, and changing weather conditions at an early stage. The lookout's responsibility is to keep watch for any potential threats and to communicate their observations effectively to the captain or other members of the crew, ensuring that prompt action can be taken when necessary.

Though it's important for vessels to have qualified operators and designated safety personnel, these roles may not be mandated at all times or on every vessel, depending on specific regulations or the size of the crew. In contrast, the requirement for a lookout is a fundamental safety measure that applies universally to all vessels, making it an essential practice for maritime operations.