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Journal articles on the topic 'Ship hull'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Zhang, Xiangming, Lingkai Huang, Libao Zhu, Yuhang Tang, and Anwen Wang. "Ultimate Longitudinal Strength of Composite Ship Hulls." Curved and Layered Structures 4, no. 1 (2017): 158–66. http://dx.doi.org/10.1515/cls-2017-0012.

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Abstract A simple analytical model to estimate the longitudinal strength of ship hulls in composite materials under buckling, material failure and ultimate collapse is presented in this paper. Ship hulls are regarded as assemblies of stiffened panels which idealized as group of plate-stiffener combinations. Ultimate strain of the plate-stiffener combination is predicted under buckling or material failure with composite beam-column theory. The effects of initial imperfection of ship hull and eccentricity of load are included. Corresponding longitudinal strengths of ship hull are derived in a st

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2

Bagazinski, Noah J., and Faez Ahmed. "ShipGen: A Diffusion Model for Parametric Ship Hull Generation with Multiple Objectives and Constraints." Journal of Marine Science and Engineering 11, no. 12 (2023): 2215. http://dx.doi.org/10.3390/jmse11122215.

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Ship design is a years-long process that requires balancing complex design trade-offs to create a ship that is efficient and effective. Finding new ways to improve the ship design process could lead to significant cost savings in the time and effort required to design a ship, as well as cost savings in the procurement and operation of a ship. One promising technology is generative artificial intelligence, which has been shown to reduce design cycle times and create novel, high-performing designs. In a literature review, generative artificial intelligence was shown to generate ship hulls; howev

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3

Chen, Nian-Zhong, and C. Guedes Soares. "Ultimate Longitudinal Strength of Ship Hulls of Composite Materials." Journal of Ship Research 52, no. 03 (2008): 184–93. http://dx.doi.org/10.5957/jsr.2008.52.3.184.

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A progressive collapse analysis method is proposed to predict the ultimate longitudinal strength of ship hulls of composite materials. The load-average strain curve derived from a progressive failure nonlinear finite element analysis is adopted for representing the behavior of each stiffened composite panel forming a hull cross section. The bending moment of the ship hull under a prescribed curvature is achieved by integrating the reaction force of each stiffened panel over a hull cross section based on the load-average strain curves. The ultimate longitudinal strength of a ship hull is obtain

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4

Santoso, Mardi, Budianto, Arga Bangun Kusuma, and Muhammad Ilham Yusuf Rosidy. "Effectiveness of Crew Boat Hull Form on Manouvering Performance." IOP Conference Series: Earth and Environmental Science 1265, no. 1 (2023): 012017. http://dx.doi.org/10.1088/1755-1315/1265/1/012017.

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Abstract The condition of the crew boat is good hull shape with good operational conditions when maneuvering. In this case, the condition of the waveform at sea will have a significant impact on the ship’s motion. To provide the optimal type of hull, it was developed by conducting several simulations on the ship’s motion. Several simulation conditions were carried out, including analyses of ship speed, the shape of the waves formed, and ship maneuvering. At the simulation stage, several types of hulls were carried out, including the single U-hull, the single V-hull, the trimaran, and the catam

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Paik, Jeom Kee. "A Guide for the Ultimate Longitudinal Strength Assessment of Ships." Marine Technology and SNAME News 41, no. 03 (2004): 122–39. http://dx.doi.org/10.5957/mt1.2004.41.3.122.

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The aim of the present paper is to establish a practical guide for the ultimate longitudinal strength assessment of ships. The ultimate hull girder strength of a ship hull can be calculated using either the progressive collapse analysis method or closed-form design formulas. In the present paper, both the progressive collapse analysis method and the design formulas are presented. A comparison between the progressive collapse analysis results and the design formula solutions for merchant cargo ship hulls is undertaken. The total design (extreme) bending moment of a ship hull is estimated as the

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6

Zakerdoost, Hassan, Hassan Ghassemi, and Mahmoud Ghiasi. "An evolutionary optimization technique applied to resistance reduction of the ship hull form." Journal of Naval Architecture and Marine Engineering 10, no. 1 (2013): 1–12. http://dx.doi.org/10.3329/jname.v10i1.12927.

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Hull form optimization from a hydrodynamic performance point of view is an important aspect of ship design. This paper presents a computational method to estimate the ship resistance (viscous & wave) in calm-water. In the optimization process the evolution strategy (ES) technique is linked to the computational method to obtain an optimum hull form by taking into account the displacement as design constraint. For allowing the large variation of hull form during optimization process the hull surface is represented by NURBS. New hull forms are obtained from the well-known S60 hull and the cla

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7

Sarkar, Rabby. "Structural Analysis of Ship Hulls Using Finite Element Methods." Innovative Journal of Applied Science 01, no. 01 (2024): 01–03. https://doi.org/10.70844/ijas.2024.1.4.

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Ship hull is a complex design where various types of complex loading conditions, like as Hydrostatic, Hydrodynamic, Wind, Wave and external internal bending forces. Ensuring structural integrity under these varying loads is essential for the ship structural safety and environmental protection. This review discusses the application of Finite Element Methods (FEM) for the safety of ship hulls and analysis of ship hulls, emphasizing two significant studies that leverage ANSYS SOFTWARE to evaluate stress concentrations and deformation of hull under the various loading operation including the wave

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8

Filatov, Anton. "A digital twin of the ship hull, purpose and main principles of development." Transactions of the Krylov State Research Centre 4, no. 398 (2021): 87–92. http://dx.doi.org/10.24937/2542-2324-2021-4-398-87-92.

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Object and purpose of research. The object under study is ship hulls. The purpose is formulation of the digital twin (DT) objective for the ship hull and approach to its development. Materials and methods. Existing methods of developing digital models and systems of strength, vibration, and stability are used. Main results. The objective of DT is formulated and the approach to its development is presented, which states the main principles of development. Conclusions. Application of ship hull DT will increase the economic efficiency, operational safety and reliability of ship hulls.

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9

Pérez, F. L., J. A. Clemente, J. A. Suárez, and J. M. González. "Parametric Generation, Modeling, and Fairing of Simple Hull Lines With the Use of Nonuniform Rational B-Spline Surfaces." Journal of Ship Research 52, no. 01 (2008): 1–15. http://dx.doi.org/10.5957/jsr.2008.52.1.1.

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This paper deals with the use of a simple parametric design method applied to simple hull lines, such as sailing ship hulls and round bilge hulls. The described method allows the generation of hull lines that meet hydrodynamic coefficients imposed by the designer, obtaining more flexibility than with normal affine transformations of a parent hull. First, a wire model of the ship stations is made with the use of explicit curves. The method is completed with an automatic surface modeling of the previ¬ously generated offsets. The construction of spline curves and their application in the definiti

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10

Tadros, Mina, Manuel Ventura, and C. Guedes Soares. "Review of the Decision Support Methods Used in Optimizing Ship Hulls towards Improving Energy Efficiency." Journal of Marine Science and Engineering 11, no. 4 (2023): 835. http://dx.doi.org/10.3390/jmse11040835.

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This paper presents a review of the different methods and techniques used to optimize ship hulls over the last six years (2017–2022). This review shows the different percentages of reduction in ship resistance, and thus in the fuel consumption, to improve ships’ energy efficiency, towards achieving the goal of maritime decarbonization. Operational research and machine learning are the common decision support methods and techniques used to find the optimal solution. This paper covers four research areas to improve ship hulls, including hull form, hull structure, hull cleaning and hull lubricati

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11

Muthugala, M. A. Viraj J., Anh Vu Le, Eduardo Sanchez Cruz, Mohan Rajesh Elara, Prabakaran Veerajagadheswar, and Madhu Kumar. "A Self-Organizing Fuzzy Logic Classifier for Benchmarking Robot-Aided Blasting of Ship Hulls." Sensors 20, no. 11 (2020): 3215. http://dx.doi.org/10.3390/s20113215.

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Regular dry dock maintenance work on ship hulls is essential for maintaining the efficiency and sustainability of the shipping industry. Hydro blasting is one of the major processes of dry dock maintenance work, where human labor is extensively used. The conventional methods of maintenance work suffer from many shortcomings, and hence robotized solutions have been developed. This paper proposes a novel robotic system that can synthesize a benchmarking map for a previously blasted ship hull. A Self-Organizing Fuzzy logic (SOF) classifier has been developed to benchmark the blasting quality of a

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12

Deng, Rui, Shigang Wang, Yuxiao Hu, Yuquan Wang, and Tiecheng Wu. "The Effect of Hull Form Parameters on the Hydrodynamic Performance of a Bulk Carrier." Journal of Marine Science and Engineering 9, no. 4 (2021): 373. http://dx.doi.org/10.3390/jmse9040373.

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In this study, the effect of joint optimization of the principal dimensions and hull form on the hydrodynamic performance of a bulk carrier was studied. In the first part of the joint optimization process, fast principal-dimension optimization of the origin parent ship considering the integrated performance of ship resistance, seakeeping, and maneuverability, as well as their relationships with the principal dimensions were analyzed in detail based on the ship resistance, seakeeping qualities, and maneuverability empirical methods of Holtrop and Mennen, Bales, and K and T indices, respectively

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13

Haro, Marco Polo Espinoza, Jong-Chun Park, Dong-Hyun Kim, and Sung-Bum Lee. "CFD Simulation on Workability of a Seaweed Harvesting Boat Due to Wake-Wash." Journal of Marine Science and Engineering 8, no. 8 (2020): 544. http://dx.doi.org/10.3390/jmse8080544.

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In the present study, a 2-ton class seaweed harvesting boat was optimized by employing a W-shape hull form to reduce roll motion due to wake-wash from passing boats. A series of numerical simulations were conducted using Star-CCM+, a commercial CFD (computational fluid dynamics) software, to improve workability by optimizing the hull form from the conventional design (original hull form). The 2-dimensional roll decay motion of various hull forms with W-shape midsection were simulated and the hull form with the best performance in free roll decay test was selected. To evaluate stability of each

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14

Krivoshapko, Sergey N., and Vyacheslav N. Ivanov. "Analytical surfaces for ship hulls." RUDN Journal of Engineering Researches 22, no. 3 (2021): 283–92. http://dx.doi.org/10.22363/2312-8143-2021-22-3-283-292.

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The choice of optimal shape of ship hull surface is one of the main problems of ship architects and designs. A choice of the form is based on empirical formulae or on intuition of designers. In the article a method of determination of explicit algebraic equations of theoretical shape of ship hull with three main cross-sections given in advance and coinciding with the design waterline, the midship section, and with the main buttock line is given. The forms of the lines in the main cross-sections are chosen from conditions taken in advance. These surfaces are called hydrodynamic. A method is ill

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15

Pérez-Arribas, Francisco. "Parametric Generation of Small Ship Hulls with CAD Software." Journal of Marine Science and Engineering 11, no. 5 (2023): 976. http://dx.doi.org/10.3390/jmse11050976.

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CAD software is a daily tool in ship design offices and shipyards, and every software uses NURBS or B-splines curves and surfaces as common foundations. The CAD tools of today are not static software products and most of them now include parametric design modules, which enable users to change the shape of an object based on its key geometric feature parameters with the use of sliders or equivalent controls. Although B-spline techniques are commonly applied to the representation of the ship hull curves and surfaces, the parametric deformation of the hull surfaces based on geometric parameters i

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16

Yu, Haicheng, Songhao Wu, Yingdong Zhao, Wenlong Liu, and Haiyi Yang. "A Novel Hull Girder Design Methodology for Prediction of the Longitudinal Structural Strength of Ships." Journal of Marine Science and Engineering 12, no. 12 (2024): 2368. https://doi.org/10.3390/jmse12122368.

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The ship hull girder model has been widely adopted in ship mechanics research such as small-scale and large-scale hydroelastic ship model experiments. Current design methods cannot seriously meet the structural rigidity requirement, and the distinction between the ship structural masses and the cargo masses is rather vague. This research proposes a simple and novel ship hull girder design methodology. The main novelties are that (1) the structural rigidity design requirement for the ship hull girder corresponding to any targeted real ship with arbitrary structural complexity is precisely satis

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17

Jianping, Chen, Xu Jie, Gong You, and Xu Li. "Ship Hull Principal Dimensions Optimization Employing Fuzzy Decision-Making Theory." Mathematical Problems in Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/5262160.

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The paper presents an optimization method for the ship hull principal dimensions scheme employing the fuzzy decision-making theory. First of all, the paper establishes the fuzzy decision-making model of the ship hull principal dimensions optimization, and then a series of ship hull principal dimensions schemes are accordingly constructed by employing the variable value method. On the basis of this, the fuzzy decision-making method is employed to evaluate the series ship hull principal dimensions schemes. Finally, the optimal ship hull principal dimensions scheme is obtained. The example demons

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18

Perez-Arribas, Francisco L., and Erno Peter-Cosma. "Parametric Generation of Planing Hulls with NURBS Surfaces." Journal of Ship Research 57, no. 04 (2013): 241–61. http://dx.doi.org/10.5957/jsr.2013.57.4.241.

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This article presents a mathematical method for producing hard-chine ship hulls based on a set of numerical parameters that are directly related to the geometric features of the hull and uniquely define a hull form for this type of ship. The term planing hull is used generically to describe the majority of hard-chine boats being built today. This article is focused on unstepped, single-chine hulls. B-spline curves and surfaces were combined with constraints on the significant ship curves to produce the final hull design. The hard-chine hull geometry was modeled by decomposing the surface geome

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19

Cheng, Xuankai, Xinhui Huang, Detao Xu, et al. "Ship Optimization Based on Fully-Parametric Models for Hull, Propeller and Rudder." Journal of Marine Science and Engineering 12, no. 9 (2024): 1635. http://dx.doi.org/10.3390/jmse12091635.

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The purpose of ship optimization is to reduce the resistance of the ship and improve the propulsive efficiency of the propeller. Taking the design of the hull, propeller and rudder as an example, the integration optimization of ship speed performance based on the fully-parametric model was described in detail. Based on the parent hull, stock propeller and flat plate rudder, the fully-parametric coupling models of ship, propeller and rudder were established. The fully-parametric optimization method was used to optimize the optimal combination of hull, propeller and rudder with low resistance, h

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20

Feng, Yanxin, Ould el Moctar, and Thomas E. Schellin. "Parametric Hull Form Optimization of Containerships for Minimum Resistance in Calm Water and in Waves." Journal of Marine Science and Application 20, no. 4 (2021): 670–93. http://dx.doi.org/10.1007/s11804-021-00243-w.

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AbstractThis paper described the process of generating the optimal parametric hull shape with a fully parametric modeling method for three containerships of different sizes. The newly created parametric ship hull was applied to another ship with a similar shape, which greatly saved time cost. A process of selecting design variables was developed, and during this process, the influence of these variables on calm water resistance was analyzed. After we obtained the optimal hulls, the wave added resistance and motions of original hulls and optimal hulls in regular head waves were analyzed and com

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21

Li, Ya Nan, Jun Wei Zhou, Da Zheng Wang, and Yong Gang Cui. "Resistance and Strength Analysis of Three Hulls with Different Knuckles." Advanced Materials Research 779-780 (September 2013): 615–18. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.615.

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Three FRP fishing vessel hulls with different knuckles, the two knuckles ship, the round bilge ship and the single knuckle ship (hereinafter using abbreviation the TKS, the RBS, and the SKS, respectively), are studied to reduce resistance and enhance strength. Here the TKS is a variation design from the RBS. And the knuckles on the hull were designed paralleled with the streamlines of the hull surface of the RBS at the design speed, and the SKS is applied as the comparison ship. The resistance of the three hulls is predicted using the CFD software FLOW-3D, at the same time, the midship section

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22

Cole, S. L. "A Numerical Solution to the Three-Dimensional Low-Aspect-Ratio Flat Ship Problem." Journal of Ship Research 34, no. 04 (1990): 283–88. http://dx.doi.org/10.5957/jsr.1990.34.4.283.

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This paper defines a numerical procedure for solving the low-aspect-ratio flat ship problem and providesa sample solution using MAPLE, a symbolic manipulation software language, for the class of hulls with slope fx = -(a + bx + cy2 + dxy2 + ex2 + gy4)and parabolic planform y2&lt; xfor 0 &lt; x&lt; 1. The lift and drag are computed as a function of the ship speed and arbitrary hull parameters a through g. To demonstrate the usefulness of these formulas, two simple optimizations are performed for three fixedhull speeds. First, the hull parameters are chosen so as to minimize the drag

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Muis Alie, Muhammad Zubair, Taufiqur Rachman, A. Ardianti, Alamsyah, Nur Indah, and Nur Salsabila Aulia. "The effect of damage on single and double hull construction to the ultimate strength of the ship." IOP Conference Series: Earth and Environmental Science 1461, no. 1 (2025): 012001. https://doi.org/10.1088/1755-1315/1461/1/012001.

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Abstract Ship construction typically includes single hull and double hull designs, each offering distinct advantages and disadvantages concerning the ship’s ultimate strength. Because a single hull does not have an inner hull or inner bottom, it may carry more cargo than a double hull. Compared to a single hull, a double hull offers greater safety during collisions and grounding incidents due to the presence of an additional inner hull and inner bottom. As a result, this influence has to be examined in relation to the ship design and construction specifications. This study aims to examine how

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Yastrebov, Dmitry Pavlovich. "To question of manufacturing zinc reference electrodes for sea-going vessels and ships." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2022, no. 4 (2022): 38–46. http://dx.doi.org/10.24143/2073-1574-2022-4-38-46.

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The article highlights the urgent problem of corrosion protection monitoring of sea-going vessels and ships. Nowadays, the ship teams provide the control by measuring the potential of the ship hull using reference electrodes. There are given the results of monitoring the corrosion protection of the hull of the sea-going vessel PM-15 project No. 304/III. The control system is based on the results of measuring the potential of the ship hull. The measurements were taken using a standard silver chloride reference electrode (SCE) and two nonstandard electrodes made of galvanized steel. In manufactu

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Abramowski, Tomasz, Katarzyna Żelazny, and Tadeusz Szelangiewicz. "Numerical analysis of influence of ship hull form modification on ship resistance and propulsion characteristics." Polish Maritime Research 17, no. 1 (2010): 10–13. http://dx.doi.org/10.2478/v10012-008-0060-2.

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Numerical analysis of influence of ship hull form modification on ship resistance and propulsion characteristics After signing ship building contract shipyard's design office orders performance of ship resistance and propulsion model tests aimed at, apart from resistance measurements, also determination of ship speed, propeller rotational speed and propulsion engine power for the designed ship, as well as improvement of its hull form, if necessary. Range of ship hull modifications is practically very limited due to cost and time reasons. Hence numerical methods, mainly CFD ones are more and mo

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Yonekura, Kazuo, Kotaro Omori, Xinran Qi, and Katsuyuki Suzuki. "Designing Ship Hull Forms Using Generative Adversarial Networks." AI 6, no. 6 (2025): 129. https://doi.org/10.3390/ai6060129.

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We proposed a GAN-based method to generate a ship hull form. Unlike mathematical hull forms that require geometrical parameters to generate ship hull forms, the proposed method requires desirable ship performance parameters, i.e., the drag coefficient and tonnage. The objective of this study is to demonstrate the feasibility of generating hull geometries directly from performance specifications, without relying on explicit geometrical inputs. To achieve this, we implemented a conditional Wasserstein GAN with gradient penalty (cWGAN-GP) framework. The generator learns to synthesize hull geometr

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Yastrebov, Dmitry Pavlovich, Oleg Aleksandrovich Belov, Vladimir Alekseevich Shvetsov, Bogdan Vladimirovich Tarabanov, and Sergey Anatolevich Zaitsev. "Problem of using electrodes made of shipbuilding steel to protect ship hull from corrosion." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2020, no. 2 (2020): 15–21. http://dx.doi.org/10.24143/2073-1574-2020-2-15-21.

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The article discusses the problem of corrosion that causes significant damage to the ship structures and mechanisms, reducing their service life. The experience of using different electrodes to control the electrochemical protection systems of steel hulls of auxiliary vessels is presented. The results of corrosion tests of PM-15 ship hull are presented, which included measurements of the hull potential at a given control point, using an electrical measuring device and two control electrodes. As the first electrode used an electric carbon product for electric machines. A ship hull steel plate w

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Hakim, Muhammad Luqman, Ahmad Firdaus, Gita Marina Ahadyanti, and Totok Yulianto. "Comparative Analysis of Slamming Phenomenon Prediction between U and V Hulls using Strip Theory Method." Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 19, no. 3 (2022): 122–32. http://dx.doi.org/10.14710/kapal.v19i3.46805.

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Choosing the right hull shape is important in designing a ship, for example, a U-section or V-section of the hull. The hull shape will affect various aspects, such as design, resistance, seakeeping, structure and production. The ship hull must be properly designed so that it can operate according to the ship’s mission. From the seakeeping aspect of the ship's motion at sea, the difference in the hull shape will result in different motions and dynamic effects such as the slamming phenomenon. Based on the difference in the hull shape cases, this study analyzed the difference in the probability o

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Hakim, Muhammad Luqman, Tuswan Tuswan, Ahmad Firdaus, and Ocid Mursid. "INVESTIGATING THE COMPARISON OF SHIP RESISTANCE COMPONENTS BETWEEN U AND V-SHAPED HULLS." Jurnal Teknologi 85, no. 3 (2023): 153–64. http://dx.doi.org/10.11113/jurnalteknologi.v85.19382.

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The selection of a hull design with minimal drag is an important effort to reduce emission levels on ships. Two different hull shapes, U and V hulls, have unique properties that affect their drag production, which has been studied extensively in the past. This study aims to re-examine the differences between the two hull types by conducting a simple analysis of drag prediction results using empirical and numerical slender body methods. Both hull models in this study have the same size and volume. The results indicate that the U hull has a higher frictional resistance ( ) than the V hull due to

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Giyan Mitari, Ivory, Wiwin Sulistyawati, and Purwo Joko Suranto. "Hydrodynamic Analysis in Redesigning a Monohull Passenger Ship into a Catamaran." E3S Web of Conferences 328 (2021): 07007. http://dx.doi.org/10.1051/e3sconf/202132807007.

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In line with technological developments, many studies have led to the factors that consider hull shape planning. Therefore, innovations in hull form planning are the primary basis for obtaining a hull that is considered efficient in reducing ship resistance and fuel consumption. This study aims to modify the design of a monohull and transform it into a catamaran while maintaining the total length and Displacement ratio. The ship model used is the Monohull passenger ship with a rounded shape and modified to become a catamaran with a chine shape. The hull chine symmetrical was determined by stag

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Sun, Shuzheng, Wenlei Du, and Hui Li. "Study on Green Water of Tumblehome Hull Using Dam-Break Flow and Ranse Models." Polish Maritime Research 24, s2 (2017): 172–80. http://dx.doi.org/10.1515/pomr-2017-0080.

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Abstract The tumblehome hull adopts some novelty designs such as low-tumblehome freeboard and wave-piercing bow. The new form design makes the ship have many special hydrodynamic performances. Especially the green water of tumblehome hull is different from that of hulls with flare free board. Green water is a strong nonlinear phenomenon of ship-wave interaction, the variation of free surface of liquid is complicated, and there are still some difficulties to solve green water problems well with numerical simulation method. In this paper firstly the motion responses of the tumblehome hull was ca

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Gavan, Eugen, Violeta Mihaela Hogas, Florin Renardo Teodor, and Costel Iulian Mocanu. "Comparative study of the cutting shape from the reinforced elements on the ship body structure." Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XI, Construcţii navale/ Annals of "Dunărea de Jos" of Galati, Fascicle XI, Shipbuilding 43 (December 15, 2020): 45–52. http://dx.doi.org/10.35219/annugalshipbuilding.2020.43.06.

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"In order to achieve a lighter ship hull, solutions are required regarding the mass reduction of the structural elements, which are part of the ship hull. In the development of the ship hull, besides the shell, there is another series of system elements, the transverse and longitudinal frames, which ensure the rigidity, the strength and the stability of the ship. Depending on the building system of the ship hull, these structural elements have a more or less preponderance in the total mass of the ship. In this study paper using Finite Elements Method will be presented a comparative study of di

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An, Feng Bao, Ping Yang, Xin Ping Yan, and Ming Li. "Influence Analysis of Hull Deformation on Dynamic Behavior of Propulsion Shafting." Advanced Materials Research 904 (March 2014): 432–36. http://dx.doi.org/10.4028/www.scientific.net/amr.904.432.

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The aim of this paper is to study the influence of hull deformation on dynamic behavior of ship propulsion shafting. Taking an 8530TEU container ship as an objective and using the finite element method, a global ship structure model is built up to evaluate the hull deformations under typical loading cases. Then the hull bottom-propulsion shafting integrated model is adopted to analyze the effect of hull deformation on shafting natural frequency under dry and wet mode. The results show that the natural frequencies of the shafting will increase due to the effect of hull deformation. Consequently

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Rahmat Azis Nabawi, Syahril, and Primawati. "Study Reduction of Resistance on The Flat Hull Ship of The Semi-Trimaran Model: Hull Vane Vs Stern Foil." CFD Letters 13, no. 12 (2021): 32–44. http://dx.doi.org/10.37934/cfdl.13.12.3244.

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Flat hull ships is appraised for its superiority due to the manufacturing simplicity and lower investment costs, yet the ship has its own weakness for it requires a greater resistance. As a matter of fact, a significant reduction on the resistance can be done with foil installation but it is necessary to study the optimal position of the foil installation. This study is aimed at revealing the effectiveness of the Hull Vane and Stern Foil installation in reducing the resistance experienced by the flat hull ship of the semi-trimaran model. The research was conducted by comparing the resistance e

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Leduc, Daniel. "A new nematode species, Chromadorina tangaroa sp. nov. (Chromadorida: Chromadoridae) from the hull of a research vessel, New Zealand." PeerJ 8 (May 26, 2020): e9233. http://dx.doi.org/10.7717/peerj.9233.

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Chromadorina is a globally distributed, largely marine nematode genus frequently found on a variety of organisms, including macro- and microalgae and crustaceans, as well as artificial substrates such as settlement plates and ship hulls. Here, Chromadorina tangaroa sp. nov. is described from filamentous seaweed growing on the hull of RV Tangaroa anchored in Wellington, North Island of New Zealand. It is characterized by body length 763–1,086 μm, and pore of secretory-excretory system located at or near level of teeth. Males have spicules with rounded capitulum followed by a narrower shaft and

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Indiaryanto, Mahendra, Ahmad Syafi'ul Mujahid, Taufiq A. Setyanto, and Navik Puryantini. "Hull Form Factor Prediction of Mini Submarine Model Using Prohaska Method." EPI International Journal of Engineering 3, no. 2 (2021): 160–64. http://dx.doi.org/10.25042/epi-ije.082020.12.

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Speaking of prisoners on mini-submarines is certainly different Fnom the type of surface vessels in general. This is related to differences in the shape of the sub's hull when compared to surface ship. In addition to differences in the shape of the hull, the difference in the operational area of the ship is also different, where the submarine's hull operates at full water depth, while the surface ship the ship hull partly operates at sea level. If the submarine model is tested then the value of the coefficient of resistance will be very different. Where the component of the coefficient of re

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Dektyarev, Alexander V., and Pavel G. Zobov. "A TECHNOLOGY FOR PRODUCING THE SMALL VESSEL HULL BY THE ADDITIVE MANUFACTURING METHODS." Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S. O. Makarova 14, no. 4 (2022): 571–82. http://dx.doi.org/10.21821/2309-5180-2022-14-4-571-582.

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The issues of the technological complex for manufacturing the hull of a small vessel obtained using additive manufacturing methods are considered in the paper. The purpose of the work is to study the emerging problems, issues, patterns, rules and norms of the process of 3D-printing the hull of a small vessel. The objectives of the paper include presentation of previously obtained calculated and experimental results for printing and assembling the ship hull; development of a method for assembling a hull using additive technology; comparative analysis of the labor intensity of manufacturing ship

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Hunsucker, Kelli Z., J. Travis Hunsucker, Harrison Gardner, and Geoffrey Swain. "Static and Dynamic Comparisons for the Evaluation of Ship Hull Coatings." Marine Technology Society Journal 51, no. 2 (2017): 71–75. http://dx.doi.org/10.4031/mtsj.51.2.9.

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AbstractStatic immersion tests are commonly used to evaluate the performance of marine coatings prior to use on ship hulls or for other applications. Although these tests provide valuable data, they do not expose the coatings to the hydrodynamic and fouling conditions that will be present when a ship is underway, thus making it difficult to extrapolate results to ship hull performance. The present study reports data for two commercially available ship hull coatings (one antifouling and one fouling release coating) exposed concurrently to static and dynamic ocean conditions for 4 months. Coatin

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Бокатова, А. А., and Н. И. Герасимов. "Wear of hulls and hull structures of Russian NAVY auxiliary vessels." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII), no. 2(52) (June 5, 2021): 64–68. http://dx.doi.org/10.37220/mit.2021.52.2.008.

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В статье рассматривается вопрос износа связей корпусных конструкций судов атомно-технологического обслуживания военно-морского флота, транспортирующих жидкие радиоактивные отходы. Как известно, определение технического состояния корпуса судна является основным параметром установления их пригодности к дальнейшей эксплуатации. Авторами были проанализированы исследования влияние гамма-облучения на лакокрасочные покрытия и установлено, что такое воздействие приводит к изменению основных характеристик лакокрасочных покрытий, вследствие чего наступает их отслаивание от поверхности корпусных конструк

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Xu, Likun, and Tingyong Wang. "Impressed Current Anode for Ship Hull Protection." Materials Performance 50, no. 6 (2011): 40–42. https://doi.org/10.5006/mp2011_50_6-40.

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Impressed current cathodic protection in combination with a barrier coating is often used to prevent corrosion on ship hulls in seawater. An anode for ship hull protection was developed using a mixed metal oxide-clad titanium body encapsulated in a glass fiber-reinforced epoxy holder. The anode was tested and found capable of discharging high current while remaining stable under harsh working conditions.

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Nguyen Thi Ngoc Hoa, Tat-Hien Le, and Le Doan Nhat Huy. "Numerical Simulation Flow Around the Containership by using CFD Method." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 117, no. 1 (2024): 203–13. http://dx.doi.org/10.37934/arfmts.117.1.203213.

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Predict accurately resistance of the ship and flow around ship hull form is extremely important as these are input parameters for optimizing ship hull form, designing the ship propulsion system. This paper focuses on the numerical simulation of the flow around the Container Ship Fortune Freighter in calm water condition at different ship speeds by using CFD method. The results of impact of ship speed on components of ship resistance, wave patterns, volume fraction of air, the distribution of pressure, and wall shear stress on the ship's hull surface, as well as the nominal wake field are provi

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Song, Soonseok, Yigit Kemal Demirel, Claire De Marco Muscat-Fenech, et al. "Investigating the Effect of Heterogeneous Hull Roughness on Ship Resistance Using CFD." Journal of Marine Science and Engineering 9, no. 2 (2021): 202. http://dx.doi.org/10.3390/jmse9020202.

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Research into the effects of hull roughness on ship resistance and propulsion is well established, however, the effect of heterogeneous hull roughness is not yet fully understood. In this study, Computational Fluid Dynamics (CFD) simulations were conducted to investigate the effect of heterogeneous hull roughness on ship resistance. The Wigley hull was modelled with various hull conditions, including homogeneous and heterogeneous hull conditions. The results were compared against existing experimental data and showed a good agreement, suggesting that the CFD approach is valid for predicting th

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Tadros, Mina, Manuel Ventura, and C. Guedes Soares. "Effect of Hull and Propeller Roughness during the Assessment of Ship Fuel Consumption." Journal of Marine Science and Engineering 11, no. 4 (2023): 784. http://dx.doi.org/10.3390/jmse11040784.

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The effects of hull and propeller roughness are presented over ten years of operation on ship performance. The developed model used in this study is a combination of NavCad and Matlab to perform the resistance and propulsion computations of the selected ship as well as the processing of input and output data. By considering the ship hull, the engine installed and an optimized propeller, the ship performance is computed for a different combination of hull and propeller roughness according to the ITTC recommendations and the opinion of experts in the marine field. Twelve cases are simulated over

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Yuliora, Egi, I. Ketut Aria Pria Utama, and I. Ketut Suastika. "Numerical Analysis and Experimental Validation of Trimaran and Pentamaran Resistance at Various Separation Distances." CFD Letters 17, no. 3 (2024): 52–76. http://dx.doi.org/10.37934/cfdl.17.3.5276.

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Trimaran and pentamaran are multihull types with an odd number of hulls, namely three and five hulls, generally consisting of one center hull and two or four side hulls smaller than the center hull, which can reduce ship resistance. The trimaran and pentamaran have a more complex phenomenon than the monohull, because of the interaction between the main hull and the side hull, which causes interference caused by changes in flow velocity, pressure changes, and wave interactions generated by each hull. The objective of this study is to analyze the resistance of trimaran and pentamaran NPL-4b mode

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Boitsov, G. V., and M. A. Koudrin. "Drawbacks of the Present System of Unified Requirements for Ship Hull Global Strength and Potential Ways to Rectify Them." Marine Technology and SNAME News 37, no. 04 (2000): 185–90. http://dx.doi.org/10.5957/mt1.2000.37.4.185.

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This paper considers inadequacies in the formulas for ship global hull strength currently approved by members of the International Associations of Classification Societies (IACS). Citing the results of several experimental and numerical studies, the author proposes modifications to the Rules formulas on ship hull vertical bending moments. Wave loading on the hull under steady wave conditions is studied for long-term ship operations, and the existing fatigue strength standards for hull longitudinals are also examined.

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Cocris, Victor Marian, and Mihaela Amorăriței. "Study regarding the influence of ship hull forms on the propeller design for a container ship." Analele Universităţii "Dunărea de Jos" din Galaţi Fascicula XI Construcţii navale/ Annals of "Dunărea de Jos" of Galati Fascicle XI Shipbuilding 45 (December 3, 2022): 99–106. http://dx.doi.org/10.35219/annugalshipbuilding/2022.45.11.

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The paper presents the results of the second stage of a study regarding the ship hull forms influence on the propulsive performances for an imposed capacity containership. In the first stage, starting from the dimensions and the forms of a given containership, other ten ship hulls have been generated and the hydrodynamic ships’ resistance have been com-puted. In the second stage, for two of the generated ship hull forms having the lowest re-sistance, the propellers have been designed, encountering problems with the placement of the optimal propeller in the after end of the ship. This focused t

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Dwiono, Aris Sasongko, Andi Hendrawan, and Sri Pramono. "Perbaikan Lambung Kapal KM. Harima PT. CSFI-Cilacap." Dinamika Bahari 2, no. 1 (2021): 56–61. http://dx.doi.org/10.46484/db.v2i1.261.

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The purpose of a ship is for the transportation or transfer of goods, but what is no less important is safety. Therefore checking every part is very important. Repair of the hull is mandatory because damage to the hull can result in imbalance in ship operations and even ship accidents. This study aims to describe the repair of the ship's hull on the KM. Harima PT. CSFI Cilacap. The study used a survey method by observing and being directly involved in the ship repair process. Improvements that are in accordance with the research objectives are repairing the ship's hull KM Harima. The results s

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Davydova, Svetlana V., and Ivan V. Andriyanov. "Principles of the tugboats’ surface systematization in the development of theoretical drawing by the interpolation method." Russian Journal of Water Transport, no. 63 (June 1, 2020): 55–61. http://dx.doi.org/10.37890/jwt.vi63.76.

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The work is devoted to the issues of the tugboat’s surface development by the interpolation method at the early design stages. The developed theoretical drawing of the tugboat’s hull should correspond as much as possible to the specified parameters, namely, the calculated values of the overall completeness ratio and the relative abscissa of the magnitude center. The principles of the approach to existing ship hulls’ systematization are given and the possibility of their application for developing a theoretical surface with the specified parameters is evaluated. As a result of the analysis, s

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Suryaningsih, Encis Indah, and Elvern Andrisen NG. "PROSES PELAKSANAAN DAN PERAWATAN KAPAL MENGGUNAKAN METODE SANDBLASTING PADA GALANGAN KAPAL PT BATAM MARINA SHIPYARD." JURNAL SAINS DAN TEKNOLOGI MARITIM 25, no. 1 (2024): 58–71. https://doi.org/10.33556/jstm.v25i1.412.

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Very corrosive and damaging sea conditions cause the hulls of sailing ships to easily corrode or become damaged, especially the lower hulls of ships which are in direct contact with sea water on a continuous basis. Therefore, maintenance and painting must be carried out to avoid work accidents on ships because it is possible that rusting can cause the ship's hull plates to become brittle. To minimize the occurrence of these things, it is necessary to carry out routine maintenance. One method used to maintain/improve the condition of the ship, especially the parts of the ship's hull that are af

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He, Ngo Van, Ngo Van Hien, Van-Thuan Truong, and Ngoc-Tam Bui. "Interaction Effect between Hull and Accommodation on Wind Drag Acting on a Container Ship." Journal of Marine Science and Engineering 8, no. 11 (2020): 930. http://dx.doi.org/10.3390/jmse8110930.

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In this paper, we present our research on applying the commercial Computational Fluid Dynamics (CFD) code to investigate interaction effect between hull and accommodation on wind drag acting above the water hull surface of a full scale 1200 TEU container ship. With this purpose, aerodynamic performances and wind drag acting on the ship hull with and without accommodations have been computed. Analyzing the obtained CFD results, the interaction effect between hull and accommodation on aerodynamic performances and wind drag acting on the ship have been found. Various new accommodation shapes have

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