... of increasing deck plate thickness on the stress of the hull structure and only strengthening the mooring equipment under deck structure without deck plate change. The results of stress calculation by the software show that the stress is reduced by increasing the thickness of deck plate. However, the influence...

... of unnecessary functions are adopted. As a result, the closure period of the topside and the hull is greatly reduced. At the same time, by optimizing the general layout of the topside, the integrated prefabrication and hoisting of the topside and the hull are realized. Integration efficiency is improved...

... operation gravel calculation geology platform hull mooring system semi-floating operation self-elevating gravel laying stiffness self-elevating platform strength research geologist international society subsea system self-elevating gravel semi-floating operation performance...

... mechanism model is established to simulate the turning and zigzag tests. The hydrodynamic coefficients of the bare hull are obtained by numerically simulating the oblique towing tests (OTT) and circular motion tests (CMT) with different drift angles and yaw rates. Combined with the empirical formula...

... is to preserve the original hull shape while investigating the potential of three distinct composite materials, GRP, carbon composite and a hybrid solution. The proposed structural configurations and scantlings in the study are meticulously crafted to align with the vertical acceleration specifications...

... on simulation; and the optimization effect is verified through tests. The optimization process is as follows: firstly, obtaining the initial hull form through research, constraining displacement, local scales, and other arrangement-related parameters. Secondly, several local hull parameters are extracted...

... by Proper Orthogonal Decomposition method. Combined with the multi-objective genetic algorithm, the optimal hulls with better comprehensive resistance performance are obtained, and optimization effect is analyzed through further verification. Furthermore, based on Proper Orthogonal Decomposition method...

... ABSTRACT This study attempted to compare and analyze the power required of the K-Supramax hull according to the added resistance estimation method in irregular wave, which includes the guideline of the estimation of minimum propulsion power in adverse conditions (MEPC71/INF.28). The added...

... of them. Notably, the Unet, which is a neural network consisting of consecutive layers of convolution and de-convolution layer, is widely used for this purpose. Meanwhile, numerical simulation is the most time-consuming step of contemporary optimal design for hull form. To avoid the bottleneck caused...

... with ship-owners of both new ships and existing ships (Yu et al., 2022). For newly-designed ships, with the help of more advanced methods of hull form optimization, ships with much better performance are emerging these days. These ships, especially low-speed ships with large block coefficient (the ratio...

... Dynamics (CFD), the navigation process of a trimaran in calm water is simulated. The different navigation states of the trimaran are obtained by changing the hull weight distribution, and the changes in trimaran resistance and ship-induced waves under the different navigation states are analyzed...

... coupling effect. machine learning calculation accuracy amplitude artificial intelligence maneuverability waterway cfd simulation modeling & simulation hydrodynamic derivative formula regression formula ship numerical result variation coefficient hull navigable ship grid...

... ABSTRACT A trimaran hull may suffer large amplitude motions such as heave and pitch in head waves when navigating with high speed, which will lead to seasickness and uncomfortable for the crew. The anti-motion appendage T-foil has a positive effect on reducing vertical motions of the trimaran...

... ABSTRACT Based on the similarity theory, a scaled model is established for the hull structure of a river-to-sea ship, which includes three compartments in the midship area. The ultimate strength and bearing capacity of the scaled model in the sagging state are obtained through experiments...

... ABSTRACT In this study, the hull form and appendage of a 6.5k DWT tanker was improved to reduce greenhouse gas emission under real operation conditions. The hull shape of the existing 6.5k DWT tankers has been designed in terms of performance in ideal conditions of calm sea. Conversely...

... centre hull equation modeling & simulation ship imo correlation 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 (ISOPE) ISBN 978-1...

... for wave energy absorption, because of the unique arrangement of the PTO system: a heavy mass ball inside of the WEC, links the device hull via springs and PTO dampers (see the PTO system from the cut-off in Figure 1b). Under the wave excitation, the device hull moves in 6 DOFs (degrees of freedom), while...

... of potential theory with a global linear and quadratic damping matrix of hull, while the other approach focuses on the calibration using potential theory with the drag term of the Morison equation. The results indicate that the motion responses obtained from the combination of these two methods are the closest...

... in literature. This work considers incidental impacts with a single growler by a nonice-class ship that is large compared to the growler. A conservation of energy approach is used and results in a relationship between growler mass and vessel speed at impact. This study concludes that non-iceclass hulls should...

... ABSTRACT This topic presents the results on estimating wind drag coefficient acting on a large surface area ship using Computational Fluid Dynamic (CFD). Firstly, aerodynamic performances and wind drag acting on an original hull has investigated. Analyzing the obtained CFD results, interaction...