Pilot doors, which are used as a passage for pilot and are operated by hydraulic power system, are fitted in the side shell plating, one in port side and one in starboard side respectively.

This is consisted of several major parts including folding type door body, ladder reel with rope ladder, hydraulic cylinders, power unit and etc..

In closed position the door is flush with the side shell plating, and in open position the door is stowed inside against the perpendicular wall to the shell plate folded into half size by the folding hinges.

Watertightness of the door in its closed position is acquired by means of rubber seal installed along the edge of the door in conjunction with the locking devices called cleats.