The paper presents a formal methodology for the hull form optimization in calm and rough water using wash waves and selected dynamic responses, respectively. Parametric hull form modeling is used to generate the variant hull forms with some of the form parameters modified, which are evaluated in the optimization scheme based on evolutionary strategies. Rankine-source panel method and strip theo...

Hydrodynamics of porpoising instability in vertical-plane motions of high-speed planing vessels have been investigated for years. However, not much work has been published on dynamic control of vertical-plane motions of planing boats by controllable appendages. In this paper, effects of controllable transom flaps on heave/pitch motion characteristics of high-speed planing vessels are investigat...

A machine learning method is developed which capable of making predictions nonlinear ship motions in a range wave conditions when trained on response data from only single seaway. The formulated around the equations motion time domain, but are augmented with data-driven terms that act to correct force-balance equations. forcing modeled using Long Short-Term Memory (LSTM) recurrent neural networ...

A Forced Roll Mechanism was designed and built at the Hydromechanics Laboratory at the United States Naval Academy. The FRM was designed as a dynamometer that forces a planing hull model in roll and measures the resulting roll moment as well as the heave and sway forces. The model is fully restrained in all six degrees of freedom. The dynamometer can be configured to either oscillate the model ...

A comprehensive and critical review of literature pertaining to the study of planing craft is given within this work. This study includes monohull design, analysis and performance prediction for flat water; many features of the planing characteristics, including dynamic stability, the use of stepped hullforms, re-entrant transoms and flow characteristics are detailed. Work on the rough water se...

Abstract The acting on the planing hull is most complex hydrodynamics simulation. Therefore, an analysis was done to evaluate drag, lift force, and seakeeping in two degrees of freedom (2-DOF) which heave trim. It fundamental aspects overall high-speed vessel. This article focused hydrodynamic performance a complete interceptor configuration that could control motion behavior deep-V calm water ...

A planing hull is a high-speed craft with relatively complex hydrodynamic characteristics. An increase in speed can induce significant change trim angle an increment ship drag. One solution to reduce resistance use interceptor. This research aimed analyze the hydrodynamics of vessel by applying The fundamental aspects reviewed included analysis drag, trim, heave, and lift force. interceptor wou...