What should two power-driven vessels do when meeting head-on and at risk of collision?

When two power-driven vessels are meeting head-on and there is a risk of collision, the best course of action as outlined in the Navigation Rules is to alter course to starboard. This maneuver allows both vessels to pass on the port side of each other, significantly reducing the likelihood of a collision.

The principle behind this rule is based on the concept of predictable movement and clear communication between vessels. By choosing to alter course to starboard, both vessels take a standard and recognized action that ensures safe passage. This approach helps maintain a clear passage and allows both operators to understand the intentions of the other vessel, thus enhancing safety on the water.

In this scenario, increasing speed or maintaining course could exacerbate the risk of collision, as they do not directly address the imminent danger of a head-on situation. Similarly, turning left would not follow the standard navigation protocol and could lead to confusion, increasing the potential for a collision. Therefore, altering course to starboard is the safest and most effective action to take in this situation.