Final answer:
The term for reporting an air contact straight above the boat is not provided in the text; the narrative describes a survival situation at sea with a focus on sighting a distant lighthouse for navigation.
Step-by-step explanation:
The term for reporting an air contact directly above a boat is not explicitly provided in the given text. However, the text describes a challenging situation at sea involving a boat and its occupants dealing with waves, currents, and the sighting of a lighthouse in the distance. It is a narrative focused on the survival of individuals in a dire maritime situation rather than the technical terminology of naval operations. The closest reference to reporting something in the air in this passage is when a character points and identifies a lighthouse, which serves as a navigational aid and a beacon of hope for the stranded crew.