... the seabed installation process of the pipeline, the ship's anchor may hook onto the pipeline, and during the subsequent raising anchor, it may also hook onto the pipeline, causing deformation and damage to the subsea pipeline. pipeline installation installation trajectory offshore pipeline...

... ABSTRACT For the problem of unmanned ships trajectory tracking with unknown parameters. Firstly, this article establishes a three degree of freedom ship kinematics and dynamics model. Secondly, an offline parameter identification algorithm is proposed based on the least squares method...

... China. The six-degree-of-freedom (6-DOF) motion of the ship, ship speed and ship trajectory are measured using a gyroscope and GPS-RTK positioning device. The sea trial motion measurement results are analyzed. It is found that the heave motion spectrum in all cases has a common peak, namely the main...

... expression machine learning hyperparameter midship proceedings trajectory simulation journal Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright © 2024 by the International Society of Offshore and Polar Engineers...

... ABSTRACT With the increasing demand for autonomous navigation of ships, ship trajectory tracking has gained significant attention. This paper aims to use deep reinforcement learning (DRL) to select adaptive Proportional Integral Derivative (PID) parameters and develop a trajectory tracking...

... reward functions in the framework of RL for ship trajectory tracking. One aims to reduce pose tracking error. The other aims to reduce velocity tracking error from the guidance velocity designed based on Lyapunov theory. In the tracking of berthing trajectories, both policies succeeded in tracking...

... ABSTRACT This paper proposes model-based reinforcement learning for trajectory tracking of surface ships. To avoid the exploration of reinforcement learning in the physical environment, we construct a maneuvering simulation environment consisting of a ship maneuvering model, an actuator...

... features individual flapping foils that rotate around a vertical axis. It works as a bio-mimicking device as the trajectories of the foils simulate the motion of whale or dolphin tails, promoting higher efficiencies of even 20 % or more when compared to conventional screw propeller solutions. To obtain...

... in a form where the significant wave height and mean wind speed are depends on the shiplength from head to 30 degrees off-bow cases. manoeuvrability trajectory equation imo guideline heesuk yang frequency ship procedure propeller revolution adverse weather condition shiplength simulation...

... as time-averaged drift wave forces derived from both far-field and near-field potential-based computational schemes. An alternative semi-empirical formula for added resistance was applied to improve simulated trajectories. Additionally, the simulated trajectories were compared to turning experiments...

... reinforcement learning artificial intelligence ship avoidance risk management obstacle planning & scheduling machine learning decision-making algorithm r-ddpg experiment coefficient ocean engineering avoidance scenario obstacle avoidance apf trajectory scenario...

... curvature radius artificial intelligence thickness process characteristic ship hull transverse curvature roller trajectory curved hull plate doubly curved hull plate efficiency machine learning incremental longitudinal curvature accuracy specimen Proceedings of the Thirty-fourth (2024...

...) systematically introduced the behavior of large-volume semi-submersible platforms due to the vortex-induced motions under different wave and current conditions. Zhi, et al.(2022) found that the VIM trajectories of the TLP are primarily always along the direction perpendicular to the current heading...

... and coating pipes are tested. The effects of different amplitudes, frequencies of cyclic loads, the weight and the roughness of the pipe are studied. phyllosilicate pipe geology offshore pipeline trajectory geologist embedment amplitude mineral pipeline clayey seabed exposed offshore...

... of ships has a significant impact on the damage of submarine pipelines (See Fig. 1). anchor anchor trajectory thickness hall anchor trajectory anchor fluke anchor shank offshore pipeline submarine pipeline experiment subsea pipeline pipeline gravel gravel backfilled offshore pipeline...

... ABSTRACT This paper aims to investigate cable disturbances on trajectory tracking during the deployment of Remotely Operated Vehicles (ROVs) within confined spaces. The Absolute Nodal Coordinate Formulation (ANCF) element in the Arbitrary Lagrange-Euler (ALE) description, combined...

... underactuated auv obstacle avoidance algorithm tracking planning & scheduling algorithm controller trajectory wang Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright © 2024 by the International Society of Offshore...

... due to the high complexity and uncertainty of the underwater environment (Yan, ZP et al., 2022). planning & scheduling auv experiment artificial intelligence node algorithm obstacle information fuzzy logic machine learning trajectory redundant node underwater vehicle efficiency...

... perturbations of the ROV and adjusts the neural network weights in real time through an adaptive mechanism to ensure stability. The final experimental results show that the proposed method has better control effect compared with PID control. INTRODUCTION At present, trajectory tracking control is the basis...

... the states of maritime obstacles, including trajectory, COG (Course Over Ground), and SOG (Speed Over Ground) to overcome this challenge (Lee et al., 2021). In this study, we introduced a learning-based method, consistent with recent significant research growth in this area. We compared tracking models...