Prestressed precast concrete members are being introduced to offshore structures. They are assembled on the fabrication yard or the construction site to form an overall strucrture. Subsequently, the joints among some members are introduced in the structure. Many connecting methods have been proposed for land structures such as buildings and bridges. However, the examples of joints in offshore structures are not so many as those for land ones.
　In offshore regions, the concrete members and joints are subjected to strong wave forces and are exposed to severe natural environments. Some connecting methods
on the land cannot be applied to the offhore.　In this paper, five kinds of the connecting methods between the beam and the column which may be applicable to offshore structures fabricated with the precast concrete members, are selected in respect to above view points. For selecting connecting methods, static laoding tests and the structural design calculation by the limit state design methods are carried out to clarify their applicability to the offshore region. This paper describes the results of the loading test and the comparison of the experimental results with the calculated ones obtained by the limit state desgin method.