Due to the random nature of the ship’s motion in an open water environment, the deployment and the landing of air vehicles from a ship can often be difficult and even dangerous. The ability to reliably predict the motion will allow improvements in safety on board ships and facilitate more accurate deployment of vehicles off ships. This paper presents an investigation into the application of art...

Heave compensator is a system that mitigates transmission of heave movement from vessels to the equipment in the vessel. In drilling industry, a heave compensator enables drilling in offshore environments. Heave compensator attenuates movement transmitted from the vessel to the drill string and drill bit ensuring security and efficiency of the offshore drilling process. Common types of heave co...

This paper presents a novel and feasible prediction procedure for ship motion in the presence of uncertain tendency of ship motion dynamic variations and stochastic sea state disturbances. An appropriate model aiming to feature the characteristics of the dynamic relationship between an observer and a ship deck is constructed, from which an initial algorithm is implemented. The optimal system or...

Robots on ships have to endure large inertial forces due to the non-inertial motion of the ship. The ship motion affects both the motion planning and control of the manipulator, and accurate predictions can improve performance substantially. It is thus important to investigate to what extent it is possible to predict the future motion of a ship. Based on these predictions, this paper presents a...

Fast catamaran oscillates in shortwave sea conditions due to its low length to beam ratio and relatively light weight. T-foils or interceptors are effective stabilizers for alleviating the pitch and heave motions of fast craft. This work designs a catamaran motion decoupling combined control system utilizing 2 T-foils and 2 interceptors, which can not only control the longitudinal motion, but a...

<i>The initial response to a marine accident can play key role minimize the accident. Therefore, various decision support systems have been developed using sensors, simulations, and active equipment. In this study, we an algorithm predict damage locations ship motion data with bidirectional long short-term memory (BiLSTM), type of recurrent neural network. To reflect low frequency charact...

The technical feasibility of roll motion control devices has been amply demonstrated for over 100 years. Performance, however, can still fall short of expectations because of deficiencies in control system designs, which have proven to be far from trivial due to fundamental performance limitations. This tutorial paper presents an account of the development of various ship roll motion control sy...

Simulation and Virtual Prototyping got into many difficulties before becoming a part of the traditional ship building processes. However the greater complexity of constructions and boarded systems demand more complete design verifications. Even if a boarded system is analogous to the land one, it must stand the high intensity of the induced ship motion. The forecasting of the ship motions has a...

Abstract The extreme motions created a negative effect on planing hull. Otherwise, interceptors enable the improvement of hydrodynamic characteristics highspeed craft. total drag ship can be divided into two components: pressure and shear forces. This project specifically aims to predict component based CFD simulation with without an interceptor resistance components. volume fluid is used in co...