What does the term "draft" refer to in boating?

The term "draft" in boating specifically refers to the depth of water needed for a vessel to float properly without any part of its hull touching the bottom. This measurement is crucial for navigation, especially in shallow waters or low tidal areas, as it determines whether a vessel can safely maneuver through specific waterways. A boat's draft is influenced by its design, weight, and cargo, so understanding this measurement helps boaters avoid grounding or running aground.

The other options, while related to aspects of a vessel, do not accurately define "draft." The length of the vessel relates to its overall size. Weight capacity pertains to how much weight a boat can safely carry, which does not directly describe the water depth requirement for floating. Lastly, the height of the vessel above water refers to the freeboard, which is about the space between the waterline and the upper deck level, rather than the draft itself. Therefore, the correct term for "draft" is indeed the depth of water needed to float a vessel.