The subject innovation is to be able to easily be made maintenance for the operator, even if not a high-place work mast headlight parts during maintenance for the improvement of the structure type of the lighting post structure segment in the masthead light parts, as well as the lighting post structure of the structure so as not to also add to the weight of the vessel to simplify and weight, and further, so that also can be eliminated passing constraints of the bridge due to the lighting post structure, a fixed post member fixed to the deck toward the vertical direction; Scaffold member fixed to the upper end surface of said fixed post member; The first segment is fixed to the support post on the top surface of the scaffolding member that is fixed in a vertical direction; It said first post segment to the segment structure is abutted on the top surface the bottom surface is connected to the first segment of the hinge post and a second post segment, which is provided with a masthead light part; Take-up means secured to the deck in a state connected to the second segment posts and cables; The marine lighting post structure is provided with a segmented structure comprising: a.