When is it necessary to use all available means to detect the risk of collision?

Using all available means to detect the risk of collision is essential in any navigation situation due to the inherent unpredictability of maritime environments. Navigators are responsible for ensuring the safety of their vessel and those around them, which necessitates vigilance at all times, not just under specific conditions.

In busy harbors, for example, increased vessel traffic can amplify the risk of collision, and while it may seem more critical in these scenarios, risks persist in less congested waters as well. Similarly, visibility can impact the ability to see other vessels, but relying solely on visual cues under good visibility conditions may lead to complacency, overlooking potential hazards that could exist in close proximity.

Navigators must remain proactive in utilizing radar, AIS (Automatic Identification System), and other electronic aids, as well as maintaining situational awareness regardless of time of day or the perceived congestion of the area. Whether in busy harbors, at night, or in clear weather, the principles of safe navigation dictate that constant vigilance and a comprehensive approach to risk assessment are necessary for successful seamanship.