Which part of a boat is defined as the distance from the water to the lowest point where water could enter?

The term "freeboard" refers specifically to the distance between the waterline and the lowest point of the deck or hull where water can potentially enter the vessel. It is a crucial measurement in boating as it provides an idea of how safe a boat is from taking on water, especially under conditions like rough seas or heavy rainfall. A greater freeboard generally indicates a less likely chance of water entering the boat.

In contrast, the bow is the front part of the boat, while the stern is the back part. The beam refers to the width of the boat at its widest point. Understanding these terms helps boaters assess their vessel's stability and safety in various water conditions. Thus, the correct choice emphasizes the significance of freeboard in maintaining the buoyancy and integrity of the boat.