This paper presents the concept of building full-fledged sea convoys, which include unmanned ships. Advantages of this approach to combining unmanned ships over those where the ship is considered as a separate unit are considered. The scheme of distribution (combining) of computing power inside the convoy is given. In this paper, a scheme is considered when the crew is present only on the lead ship. However, this does not mean that all other ships in the convoy should be only unmanned. It doesn’t matter when considering this concept. The paper also proposes an algorithm for determining obstacles using optical sensors. The aspects of information security in such convoys are also considered. Particular attention is paid to the investigation of computer incidents on unmanned ships.