Ships cruise on the docks and routes, which determines that the ship's network access method must be wireless. With the development of high-definition video surveillance technology and people's demand for mobile Internet access bandwidth, the requirements for wireless network bandwidth are becoming higher and higher, and ordinary wireless access methods have been unable to meet the demand for high bandwidth. Such as maritime, fishery administration, marine police, border and coastal defense and other law enforcement vessels, such as on-site law enforcement evidence collection videos and multimedia command and dispatch information return; tugboats, search and rescue vessels, pipe laying vessels, crane vessels and other operating vessels work and travel safely in real time Video surveillance images, real-time monitoring of driving safety images of passenger ships such as ferries and cruise ships, and Internet access for passengers are all constrained by back haul bandwidth issues, seeking a stable wireless connection with high bandwidth, long distances, and support for mobile roaming The way of entry is the common demand of everyone. Our industrial-grade long-range mobile roaming wireless communication equipment can meet the route coverage of ships in sea areas, rivers, lakes and other waters, and solve the network access of ships in the process of traveling. The coverage radius of base stations can reach 35-50KM. The system supports automatic roaming switching between base stations, which can guarantee continuous large-area network coverage in coastlines and river basins, and ensure continuous access by ships. Broadband wireless network access for law enforcement boats, operating ships, passenger ships and other ships.