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Keywords: sea state
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Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-337
... ABSTRACT With the ongoing climate change and increasing extreme weather, events like typhoons are becoming more frequent and unpredictable, leading to more extreme sea states and a greater likelihood of destructive rogue waves in coastal regions. In Hong Kong, coastal rogue waves (CWRs) near...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-353
... ABSTRACT This study proposes a novel unsupervised machine learning framework to identify stationary sea states based on Gaussian wave surface elevation simulated using the Pierson-Moskowitz spectrum for fully developed seas. The proposed methodology consists of two main steps. First...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-031
... ABSTRACT TLP-FOWT (tension-leg platform-floating wind turbine) has drawn more attention due to its better hydrodynamic properties with small motion amplitudes in hash sea state. China offshore oil engineering corporation (COOEC) proposed a submerged TLP FOWT with vertical steel wire tendons...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-508
.... Sea state is divided into calm sea condition and storm condition in this model. For calm sea condition, the long-term distribution of wave height can be described by a Weibull distribution. In contrast, under storm condition, waves are modeled as a stationary random process over short time periods...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-636
... control strategy sea state mode controller control law mode 1 hybrid control mode 2 controller control strategy ship wave drift force wave frequency estimator Proceedings of the Thirty-fifth (2025) International Ocean and Polar Engineering Conference Seoul/Goyang, Korea, June 1-6, 2025...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-104
... submersible crane vessel emilio caputano sea state buoyancy stiffness crane load installation result scenario Proceedings of the Thirty-fifth (2025) International Ocean and Polar Engineering Conference Seoul/Goyang, Korea, June 1-6, 2025 Copyright © 2025 by the International Society of Offshore...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-139
... analysis across operational sea states shows a successful reduction in heave in the presence of passive control system. Parametric studies highlight that stiffness optimization is the key to enhancing platform stability. INTRODUCTION Semisubmersibles, designed primarily for drilling in a deep-water...
Proceedings Papers

Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-238
... waters, such as parts of Europe, specifically the Norwegian Continental Shelf. sustainability sustainable development dnv sea state geologist social responsibility substation capacity curve cable configuration fatigue damage cable component geology cable design power cable curvature...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-121
... ABSTRACT In this work, the impact of current, wave and coupled of the two conditions on a floating offshore wind turbine (FOWT) has been investigated by studying the aerodynamic force under various sea states. An engineering tool is adopted in the study to assess the performance...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-538
... deep learning artificial intelligence europe government machine learning upstream oil & gas netherlands government prediction duration ship motion vmd-lstm model confidence interval prediction accuracy sea state time sery sequence neural network prediction accuracy...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-559
... ABSTRACT A method is proposed to convert the fatigue damage of each sea state to a constant stress range value. Firstly, the FE model of the semi-submersible platform is established. Secondly, the procedures of the spectral-based fatigue analysis method are clarified. The element with Maximum...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-102
... by a Proportional (P) and Proportional Integral (PI) IM controller in the peak wave frequency of the design sea state, equivalent to a resistive and reactive controller, respectively. These causal IM controllers are implemented in a MATLAB-Simulink real-time control environment and experimentally tested...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-086
... system is modelled by using ideal elements. The study focuses on surge, heave and pitch modes. The objective of the study is to evaluate the power capture performance of the system and it is shown that the system performs well for sea states with H s of 2 meters or higher. INTRODUCTION There has...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-110
... to reduce snap loads. Results are presented for a wide range of irregular sea states, varying significant wave height, wave period and directional spreading. Increasing directional spreading is found to reduce the maximum and standard deviations of the leading mooring line loads by up to 30-40% compared...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-146
... ABSTRACT This study proposes an artificial neural network (ANN) model to inversely estimate sea states from the motion signals of floating structures measured on board. A generic moored FPSO (floating production storage and offloading) is modeled and 6DOF-motion time-series data are generated...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-149
... floating production system china government upstream oil & gas platform frequency natural period south china sea mooring system sea state response spectrum nuclear power plant spar sub-sea system characteristic maximum tension hydrodynamic performance fpso dcop coordinate system cdp...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-094
... government wave energy converter talos wave energy converter sea state energy period probable sea state different wave climate complex amplitude spectrum Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-298
...% in 2050, and stop GHG emissions by 2100. For ships that have already been built, energy efficiency optimization is an effective way to reduce GHG emissions from fuel consumption. Hence, how to improve the energy efficiency level of ships in complex and changeable sea states is the key to the problem...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-436
... container ship hydraulic fracturing deformation crack propagation superposition sea state hull structure ultra-large container ship spectrum crack size analysis method fatigue crack propagation short-term sailing condition fatigue life Proceedings of the Thirty-third (2023) International...

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