Measurement of Hydrodynamic Forces and Moments acting on the Submersible Surface Ship (Gallery, Marine Dynamics Research Group)

The submersible surface ship (SSS) is a new-concept ship that avoids rough seas by going underwater using wings producing downward lift. Hydrodynamic forces and moments acting on the SSS prototype model in horizontal and vertical motion are measured at the Ocean Engineering Basin.

The prototype SSS model fixed to the towing carriage The carriage goes down to submerge the SSS model. The Circular Motion Test mode of the carriage system provides the model arbitrary motion in horizontal plane underwater.

The prototype SSS model The main and tail wings angles are variable. The strut is connected to the model shell through the load cell located inside the model.

The vertical mode set-up The motion in horizontal plane realized by the carriage corresponds to the vertical motion of the model relatively.

Shallow submerged depth condition The submerged depth ratio to model length, 0.8m, is 0.003375 (The upper deck is at the water surface level). Towing speed is 0.7m/s, main wing angle 10 degrees.

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