抄録
A new type wave maker without water on back side was developed and installed in the Seakeeping and Manoeuvring Basin of Nagasaki Technical Institute, M.H.I. The design theory of this new type wave maker, construction device of the gap of the flap ends assuring water tightness as well as no disturbance on wave making and the system design are described, followed by a description of the new type wave maker of the Basin.
