In this two-player game all communications between Your and Opponent use Local Area Network (LAN) connection and Socket interface. After that choose your role: Host (Server) or Guest (Client). Host is a device which waits for the Guest to connect. In 'Settings' you must enter correct Host and Guest IP-addresses. After you have placed all your ships, you need to click on 'Continue' button (Host must do it earlier than Guest). And then game starts. If it`s your move just click desired cell on the Opponent board.