Abstract
In general, highly efficient and expensive underwater vehicles have been used for oceanographic survey. However, since these vehicles are not convenient from the view point of avoiding the risk to lose, a new type of underwater vehicles are desired. A module composite underwater vehicle is proposed by authors as a new type of underwater vehicles. A characteristic of a module composite underwater vehicle is that each function of the vehicle is developed as module and worked independently. The other characteristic of it is that a radio wave communication using a dielectric material is adapted for a communication method between modules. The radio wave communication under water can be realized by sandwiching a dielectric material between modules. In this study, characteristics of communication strength depending upon arrangements and materials of radio wave communication equipment are verified.
