Wind power plant offshore communication system

A wind farm offshore communication system of a gas producing offshore wind farm, wherein the offshore wind farm includes a pipe to transfer gas produced at the offshore wind farm. The offshore communication system includes a communication unit configured to transmit and/or receive an electrical communication signal; and a coupling device coupled to the communication unit. The coupling device is configured to receive the electrical communication signal from the communication unit and to couple a corresponding electromagnetic wave into the pipe. A frequency of the electromagnetic wave is configured to allow the electromagnetic wave to propagate within the pipe. The coupling device may be configured to intercept an electromagnetic wave propagating within the pipe and to provide a corresponding electrical communication signal to the communication unit.