What component is installed on watertight doors to prevent wear and access issues?

The component that is installed on watertight doors to prevent wear and access issues is the dog wedges. Dog wedges are used to secure the watertight door in its closed position, ensuring a tight seal and preventing water ingress. They help distribute the load evenly across the door when it is closed, which minimizes wear and tear on both the door and the frame. This mechanism also helps prevent misalignment over time, which could lead to difficulties in accessing or sealing the door properly.

Seals, while also important for maintaining watertight integrity, primarily function to provide a barrier against water. They do not serve the same purpose as dog wedges in terms of securing the door and preventing fitting issues. Hinges and locks, though essential for the operational aspect of a door, do not directly address the wear or access concerns particular to watertight configurations.