The video above shows the usage of the pilothouse doors. Sorry about having to click through, but anyway it's kind of interesting. Once the video starts on Youtube, zoom up to the 5 minute mark, and watch for about 30 seconds.
PH doors are vital for boating operations. You want to be able to quickly get to both sides of the boat during docking, anchoring, etc. These doors should be watertight and be able to stand up to the elements. There are many types of doors out there, often sliding doors. These generally get hard to slide in time though.
Hampton chooses to go with what they call "aircraft doors," because they resemble the big doors on an airliner. They are very secure but relatively easy to operate.
Here one of the craftsmen test fits the door frame.
Now the door is placed in the frame, and the whole assembly will be mounted onto the boat. An impressive piece of machinery for sure.