Fishery Internet of Vessels (FIoV) is the specific application of Internet of Things (IOT) technology in marine fisheries, and its construction is a huge systematic project. In this paper,  the state-of-the-art and future trends of key technologies such as information acquisition, transmission, storage, processing and security involved in fishery internet of vessels is analyzed systematically, the technical scheme of multi-source heterogeneous fishery information acquisition and intelligent fishery vessel construction is designed, and the state-of-the-art and future trends of maritime wireless communications, ocean satellite communications, offshore broadband wireless and ad hoc networks based on MESH are analyzed; in combination with the requirements of fishery internet of vessels, the advantages and disadvantages of different communication methods in fishery internet of vessels are described, a fishery information processing method based on big data is proposed, and the information security risk for fishery internet of vessels system is analyzed. The above-mentioned analysis will lay a foundation for the design and implementation of fishery internet of vessels system.