When two powerboats approach each other, which one is the stand-on vessel?

In the context of powerboat navigation, the concept of the stand-on vessel refers to the vessel that is required to maintain its course and speed when encountering another vessel. According to the Navigation Rules, specifically Rule 18, the guidelines stipulate that when two power-driven vessels are approaching, the vessel that is on the starboard side has the status of the stand-on vessel.

This means that the starboard vessel has the right of way, while the other vessel is considered the give-way vessel, which must take action to avoid a collision. The reason for this rule is based on the typical practices and safety measures implemented to prevent accidents and ensure smooth navigation between vessels. It creates a clear protocol for expected behaviors when vessels are on a collision course.

The other options do not define the stand-on vessel accurately: simply being on the port side does not provide any navigation priority; the size of the vessels does not dictate the stand-on status; and having a lookout, while important for safety, does not determine which vessel has right of way. Thus, understanding the fundamental navigation rules is crucial for safe and effective operation when two powerboats approach each other.