What is the term for the area between a boat and the waterline?

The correct term for the area between a boat and the waterline is "Freeboard." Freeboard is a critical measurement in boating, representing the vertical distance from the waterline to the upper edge of the boat's side (the gunwale). This measurement indicates how much of the boat is above the water when it is floating. A higher freeboard offers better safety by reducing the risk of taking on water in choppy conditions.

Understanding freeboard is essential for determining the boat's stability and seaworthiness. A boat with adequate freeboard is less likely to be swamped by waves or heavy rain, making it a key factor in ensuring passenger safety.

In contrast, the term "draft" refers to the depth of water a boat requires to float without grounding, measuring from the waterline down to the lowest point of the hull. "Buoyancy" describes the upward force that keeps the boat afloat. "Trim" relates to the balance of the boat concerning its longitudinal axis, affecting its angle on the water. Each of these terms plays an important role in boating safety and performance, but "Freeboard" specifically addresses the area between the boat and the waterline.