Positioning and navigation device for fishing boat

The utility model discloses a positioning navigation device for fishing boats, which comprises a fixed frame and a positioning navigation equipment body, the top of the fixed frame is fixedly connected with a mounting box, the positioning navigation equipment body is fixedly mounted in the fixed frame and the mounting box, and a dehumidification assembly comprises a panel and two groups of side plates. One ends of the two sets of side plates are fixedly connected to one side of the panel, an opening is formed in one side of the fixing frame, the two sets of side plates are slidably installed in the fixing frame through the opening, a dehumidification box is fixedly connected to one sides of the side plates, air holes are formed in one side of the dehumidification box, and a drying agent storage box is arranged in the dehumidification box. When the positioning and navigation device is used, the drying assembly is arranged in the fixing frame for installing the positioning and navigation device, moisture in the