Which of the following is a proper navigation signal to indicate ‘I intend to overtake you’?

The proper navigation signal to indicate "I intend to overtake you" is one short blast. This signal is universally recognized in maritime navigation and communication. In the context of the International Regulations for Preventing Collisions at Sea (COLREGs), a vessel intending to overtake another vessel in a safe manner will sound one short blast to indicate that they will be passing on the other vessel's port side.

This signal is part of the standard communication protocol that helps maintain safety and clarity among vessels operating in close quarters. It’s essential for preventing misunderstandings that could lead to collisions or dangerous situations on the water.

Other signals serve different purposes; for instance, two short blasts indicate the vessel intends to pass on the starboard side, while a long blast is typically used in situations such as signaling intentions in fog or poor visibility. Five short blasts are used to indicate danger or uncertainty about the intentions of other vessels. Thus, one short blast is specifically designated for the overtaking maneuver, aligning with navigational best practices.