What is communicated by two short blasts?

The communication of two short blasts is a standardized signal in boating that indicates an intention to pass another vessel on the starboard (right) side. This signal is part of the International Regulations for Preventing Collisions at Sea, which help ensure safe navigation and clear communication among vessels.

By using two short blasts, a boater is effectively informing other vessels of their intentions, thereby facilitating safe passage and reducing the likelihood of collision. Understanding these signals is crucial for all boat operators, as it enhances safety on the water.

The other options represent different signals or requests that are not related to the specific communication of passing intention; thus, they do not apply in this context. The correct understanding of navigation signals contributes significantly to a boater's ability to operate safely and effectively in various maritime situations.