Electronic sea chart navigation apparatus

Aiming at solving the disadvantages of the present electronic sea chart navigation apparatus, the utility model provides an electronic sea chart navigation apparatus, comprising a front cover metal plate, a display, a mainboard fixing support, an embedded computer, a GPS reception module, a back cover metal plate, an adjustable support, a pedestal, an L-shaped pressure plate and a data interface, in addition, the electronic sea chart navigation apparatus also comprises a silicone rubber sealing ring, an acrylic plate, a wide voltage DC isolation unit and an optical coupler isolation unit, wherein the silicone rubber sealing ring is arranged between the front cover metal plate and the back cover metal plate, the acrylic plate is arranged at the inner side of the front cover metal plate and in the rectangular area coated by the silicone rubber sealing ring, and the wide voltage DC isolation unit and the optical coupler isolation unit are respectively arranged on the mainboard fixing support. The electronic sea