What does the term "gunwale" refer to on a boat?

The term "gunwale" refers to the upper edge or top part of the side of a boat. It plays a crucial role in providing structural support to the vessel and often serves as a surface for securing equipment or performing other tasks while the boat is in use. Understanding this part of the boat is important for rescue technicians, as it can affect safety and stability during operations on the water. The other terms such as bottom centerline, front of the boat, and left side of the boat describe different parts of a boat but do not accurately define the gunwale.