Freeboard provides a rough measure of what?

• A. Reserve buoyancy
• B. Hull strength
• C. Ballast capacity
• D. Crew comfort

Answer: (A)

Freeboard is the vertical distance from the waterline to the upper deck, which reflects how much hull remains above the water. That above-water portion equates to reserve buoyancy—the extra buoyant force available if the vessel takes on water or is heavily loaded. So freeboard gives a rough sense of how much buoyancy reserve the ship has to stay afloat.

The other ideas don’t fit as well: hull strength concerns the structural integrity of the hull itself, ballast capacity is about how much ballast water can be carried to trim and stabilize the vessel, and crew comfort relates to living conditions—none of these are direct measures of buoyancy.