Research activity information

• Jul. 2026 敬愛まちづくり財団, 前之園記念若手優秀論文賞, Blind Identification of Incident Waves and Response Transfer Functions of a Marine Vessel Based on Measured Responses


• May 2025 日本船舶海洋工学会, 日本船舶海洋工学会賞（論文賞）, 船体応答に基づく波浪情報推定における不確定性解析手法

  陳 曦, 高見 朋希, 岡 正義


• 2019 日本船舶海洋工学会, 日本船舶海洋工学会賞（論文賞）, AISデータに基づく実運航船の波浪荷重推定－最大荷重に対する操船影響の評価法－

  岡 正義, 高見朋希, 馬沖


• 2012 The Japan Society of Naval Architects and Ocean Engineers, Inui award, 流体構造連成解析の水面衝撃問題への適用性に関する一考察

  高見朋希

• Long-term risk-informed ship design optimization

  Tomoki Takami, Masaru Kitahara, Atsuo Maki, Ulrik Dam Nielsen, Jørgen Juncher Jensen

  Lead, Elsevier BV, Aug. 2026, Reliability Engineering & System Safety, 113259 - 113259

  [Refereed]

  Scientific journal


• Time-reversal approach for probabilistic identification of nonlinear design irregular waves

  Wataru Fujimoto, Tomoki Takami

  Elsevier BV, Aug. 2026, Ocean Engineering, 363, 126779 - 126779

  [Refereed]

  Scientific journal


• Short-Crested Stochastic Wave Spectra Estimation Based on Response Surface Methodology Considering Uncertainty in Transfer Functions of a Ship

  Xi chen, Tomoki Takami, Masayoshi Oka, Yasumi Kawamura, Tetsuo Okada

  Jun. 2026, Proceedings of the ASME 2026 45nd International Conference on Ocean, Offshore and Arctic Engineering OMAE2026

  [Refereed]

  International conference proceedings


• An active learning framework for long-term prediction of mean outcrossing rates in wave-induced ship responses

  Tomoki Takami, Masaru Kitahara, Atsuo Maki, Ulrik Dam Nielsen, Jørgen Juncher Jensen

  Lead, Jun. 2026, Proceedings of the ASME 2026 45th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2026)

  [Refereed]

  International conference proceedings


• A data-driven scheme for updating of parameters for ship roll motion

  Tomoki Takami, Ulrik Dam Nielsen, Raphaël Emile Gilbert Mounet, Kenji Sasa

  Lead, Elsevier BV, May 2026, Ocean Engineering, 356, 125346 - 125346

  [Refereed]

  Scientific journal


• Sequential active learning for estimating small failure probabilities in high-dimensional problems: Application to nonlinear vessel responses

  Tomoki Takami, Masaru Kitahara

  Lead, Elsevier BV, May 2026, Structural Safety, 120, 102686 - 102686

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Investigation of depth-effects on the doppler shift and the consequence in spectral response calculations for ships

  Ulrik Dam Nielsen, Raphaël Emile Gilbert Moune, Tomoki Takami

  Apr. 2026, Ocean Engineering, 351, 124298

  [Refereed]

  Scientific journal


• Experimental study on extreme parametric rolling using design wave

  Tomoki Takami, Katsutoshi Takeda, Fuminori Yanagimoto, Kinya Ishibashi, Daichi Ota, Naoya Umeda

  Lead, Springer Science and Business Media LLC, Mar. 2026, Journal of Marine Science and Technology, English

  [Refereed]

  Scientific journal


• Approximating the Doppler Shift in Sea-Wave Spectra Observed from an Advancing Floating Platform

  Raphael E G Mounet, Ulrik D. Nielsen, Tomoki Takami

  Elsevier BV, Mar. 2026, Applied Mathematical Modelling, 116922 - 116922

  [Refereed]

  Scientific journal


• Active Learning–Based Estimation of Extreme Roll Motion in Beam Seas with Supervised Dimensionality Reduction and Gradient Approximation

  Tomoki Takami, Masaru Kitahara

  Lead, American Society of Civil Engineers (ASCE), Mar. 2026, ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 12(1) (1)

  [Refereed]

  Scientific journal


• Blind identification of incident waves and response transfer functions of a marine vessel based on measured responses

  Tomoki Takami, Ulrik Dam Nielsen, Raphaël Emile Gilbert Mounet, Jørgen Juncher Jensen, Ryota Mori, Yusuke Komoriyama

  Lead, Elsevier BV, Jan. 2026, Expert Systems with Applications, 296, 129236 - 129236

  [Refereed]

  Scientific journal


• Uncertainty assessment of ship transfer functions arising from numerical methods and variability in actual operational conditions

  Xi Chen, Tetsuo Okada, Yasumi Kawamura, Tomoki Takami, Masayoshi Oka

  Elsevier BV, Nov. 2025, Ocean Engineering, 340, 122309 - 122309

  [Refereed]

  Scientific journal


• An exact algorithm for spectral calculations of wave-induced ship responses

  Ulrik D. Nielsen, Raphaël E.G. Mounet, Tomoki Takami

  Elsevier BV, Nov. 2025, Ocean Engineering, 340, 122183 - 122183

  [Refereed]

  Scientific journal


• Validation of operational guidance for parametric roll based on the extended Grim’s effective wave theory: insights from tank tests and 6-DOF simulation

  Katsutoshi Takeda, Fuminori Yanagimoto, Daichi Ota, Tomoki Takami, Takako Kuroda, Kinya Ishibashi, Naoya Umeda

  Abstract A visual operational guidance, known as a polar chart, shows considerable potential for preventing excessive roll motion caused by parametric roll. This study utilizes a method based on the extended Grim’s effective wave (EGEW) theory for preparing a polar chart and validates it using experimental data. Although it can also be prepared by nonlinear seakeeping simulation in irregular waves, the proposed approach is computationally more efficient. The study compared experimental data and estimated parametric roll under both longitudinal and quartering wave conditions, the latter being particularly critical for large container ships. Additionally, a 6-degree-of-freedom (6-DOF) motion simulation based on three-dimensional potential theory was employed for comparison. The results demonstrated that the polar chart yield more conservative estimates than both the experimental data and the 6-DOF simulation, effectively covering the range where parametric roll is likely to occur. The findings could contribute to the development of safer operation, thereby reducing the risk of parametric roll.

  Springer Science and Business Media LLC, Oct. 2025, Journal of Marine Science and Technology

  [Refereed]

  Scientific journal


• Doppler Shift Approximation in Seakeeping Problems: A New Formulation for Ships Advancing at Any Forward Speed

  Raphaël Emile Gilbert Moune, Ulrik Dam Nielsen, Tomoki Takami

  Oct. 2025, Proceedings of 16th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2025

  [Refereed]

  International conference proceedings


• Exact spectral calculations of wave-induced ship responses considering arbitrary speed-heading combinations in short-crested waves

  Ulrik DamNielsen, Raphaël Emile Gilbert Moune, Tomoki Takami

  Oct. 2025, Proceedings of 16th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2025

  [Refereed]

  International conference proceedings


• Concurrent Estimation of Ship Transfer Functions and Incoming Waves by Using Response Measurements

  Tomoki Takami, Ulrik Dam Nielsen, Raphaël Emile Gilbert Moune, Jørgen Juncher Jensen, Yusuke Komoriyama

  Lead, Oct. 2025, Proceedings of 16th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2025

  [Refereed]

  International conference proceedings


• Uncertainty-Aware Efficient Estimation of the Probability Density Function for Excessive Rolling of a Ship

  Tomoki Takami, Masaru Kitahara, Atsuo Maki, Leo Dostal

  Lead, Jul. 2025, ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 11(4) (4)

  [Refereed]


• Development of one-week ahead work safety prediction system combining machine learning-based wave prediction and motion response prediction of a workvessel

  Kaichi TAKEUCHI, Kenji SASA, Tomoki TAKAMI

  Japan Institute of Navigation, 2025, The Journal of Japan Institute of Navigation, 153, 36 - 47

  [Refereed]

  Scientific journal


• Extreme nonlinear ship response estimations by active learning reliability method and dimensionality reduction for ocean wave

  Tomoki Takami, Masaru Kitahara, Jørgen Juncher Jensen, Sadaoki Matsui

  Lead, Jan. 2025, Marine Structures, 99, 103723, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Uncertainty Analysis Method for Estimating Wave Parameters Based on Ship Responses

  Xi Chen, Tomoki Takami, Masayosi Oka

  Japan Society of Naval Architects and Ocean Engineers, Dec. 2024, Journal of the Japan Society of Naval Architects and Ocean Engineers, 40, 145 - 156, Japanese

  [Refereed]

  Scientific journal


• Tank Test of Flexible Acrylic Ship Model in Waves for Extreme Response Prediction

  Yusuke Komoriyama, Hidetaka Houtani, Tomoki Takami, Sadaoki Matsui, Wataru Fujimoto

  Jun. 2024, Proceedings of the ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering, English

  [Refereed]

  International conference proceedings


• Onboard Identification of Stability Parameters Including Nonlinear Roll Damping via Phase-resolved Wave Estimation Using Measured Ship Responses

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen, Atsuo Maki, Sadaoki Matsui, Yusuke Komoriyama

  Mar. 2024, Mechanical Systems and Signal Processing, 210, 111166, English

  [Refereed]

  Scientific journal


• 船体応答に基づく波浪情報推定における不確定性解析手法 -第二報-主成分分析による応答関数の不確定性

  Xi Chen, Tomoki Takami, Masayosi Oka

  Japan Society of Naval Architects and Ocean Engineers, 2024, Journal of the Japan Society of Naval Architects and Ocean Engineers, 38, 75 - 83

  [Refereed]

  Scientific journal


• Uncertainty Analysis Method for Estimating Wave Parameters Based on Ship Responses (1st Report-Influence of the Ship Speed and Uncertainty in the measurement data)

  Xi Chen, Tomoki Takami, Masayosi Oka, Yasumi Kawamura, Tetsuo Okada

  Japan Society of Naval Architects and Ocean Engineers, 2024, Journal of the Japan Society of Naval Architects and Ocean Engineers, 38, 65 - 74

  [Refereed]

  Scientific journal


• Estimating waves via measured ship responses

  Ulrik D. Nielsen, Harry B. Bingham, Astrid H. Brodtkorb, Toshio Iseki, Jørgen J. Jensen, Malte Mittendorf, Raphaël E. G. Mounet, Yanlin Shao, Gaute Storhaug, Asgeir J. Sørensen, Tomoki Takami

  Abstract Optimisation of energy efficiency and operational performance as well as assessment of safety levels and emissions of marine operations require detailed information about the acting wave system. It is possible—with an analogy to classical wave buoys—to estimate the directional wave spectrum by processing sensor measurements of wave-induced responses (e.g., motions and structural responses) from a ship. Compared to other sources of wave data (e.g., buoys, satellites, third-generation wave models), estimation concepts using the ship itself as a buoy provide the wave spectrum at the exact spatio-temporal point, potentially increasing accuracy and with minimal associated cost. This paper gives an overview of the technology, discusses associated uncertainties, and highlights new developments made for estimating waves via measured ship responses.

  Last, Springer Science and Business Media LLC, Oct. 2023, Scientific Reports, 13(1) (1), English

  [Refereed]

  Scientific journal


• Nonlinear Roll Damping Identification Based on Onboard Ship Response Measurements

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen, Sadaoki Matsui

  Oct. 2023, Proceedings of 10th PAAMES and AMEC 2023, English

  International conference proceedings


• Combination of HOSM and FORM for extreme wave-induced response prediction of a ship in nonlinear waves

  Tomoki Takami, Wataru Fujimoto, Hidetaka Houtani, Sadaoki Matsui

  Elsevier BV, Oct. 2023, Ocean Engineering, 286(15) (15), 115643 - 115643, English

  [Refereed]

  Scientific journal


• EXTREME WAVE AND VERTICAL BENDING MOMENT PREDICTIONS BY HIGHER ORDER SPECTRUM METHOD AND FORM

  Tomoki Takami, Wataru Fujimoto, Hidetaka Houtani, Sadaoki Matsui

  Jun. 2023, Proceedings of the ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering

  [Refereed]

  International conference proceedings


• Estimation of encountered wave elevation sequences based on response measurements in multi-directional seas

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen, Xi Chen

  Elsevier BV, Jun. 2023, Applied Ocean Research, 135, 103570 - 103570, English

  [Refereed]

  Scientific journal


• 船体構造デジタルツインのための複合荷重推定が可能なROMの検討と実験検証

  村上颯太, 辰⺒晃, 小森山祐輔, 高見朋希, 飯島一博

  Jun. 2023, 日本船舶海洋工学会講演会論文集, (36) (36)


• 主成分分析による応答関数の不確定性を考慮した波浪情報の不確定性解析

  陳曦, 高見朋希, 岡正義

  Jun. 2023, 日本船舶海洋工学会講演会論文集, (36) (36)


• Extreme Wave and Wave-induced Vertical Bending Moment Predictions in Higher Order Spectrum Waves using FORM

  Tomoki Takami, Wataru Fujimoto, Hidetaka Houtani, Sadaoki Matsui

  Jun. 2023, 日本船舶海洋工学会講演会論文集, (36) (36)


• Stochastic Wave Spectra Estimation (SWSE) Based on Response Surface Methodology Considering Uncertainty in Transfer Functions of a ship

  Xi Chen, Tomoki Takami, Masayoshi Oka, Yasumi Kawamura, Tetsuo Okada

  Elsevier BV, 2023, Marine Structures, 90, 103423 - 103423

  [Refereed]

  Scientific journal


• Effect of springing and whipping on exceedance probability of vertical bending moment of a ship

  Sumit Kumar Pal, Tomoki Ono, Tomoki Takami, Akira Tatsumi, Kazuhiro Iijima

  Elsevier BV, Dec. 2022, Ocean Engineering, 266, 112600 - 112600

  [Refereed]

  Scientific journal


• Application of Prolate Spheroidal Wave Functions for Assessment and Prediction of Ship Responses

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen

  Oct. 2022, Proceedngs of the 15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022, English

  [Refereed]

  International conference proceedings


• Reconstruction of incident wave profiles based on short-time ship response measurements

  Tomoki Takami, Ulrik Dam Nielsen, Chen Xi, Jørgen Juncher Jensen, Masayoshi Oka

  Elsevier BV, Jun. 2022, Applied Ocean Research, 123, 103183 - 103183, English

  [Refereed]

  Scientific journal


• 多方向不規則波中の船体応答計測に基づく 波浪及び非計測応答の時間領域推定

  高見朋希, 陳曦, 小森山祐輔

  May 2022, 日本船舶海洋工学会講演会論文集, (34) (34)


• Short-time FORM analysis for extreme roll motion prediction in beam seas

  Tomoki Takami, Jørgen Juncher Jensen, Ulrik Dam Nielsen

  Elsevier BV, Mar. 2022, Marine Structures, 82, 103160 - 103160

  [Refereed]

  Scientific journal


• Surrogate model approach for stochastic prediction of sloshing-induced pressure based on SPH with FORM

  Tomoki Takami, Chong Ma

  Informa UK Limited, Feb. 2022, Ships and Offshore Structures, 1 - 14

  Scientific journal


• 短時間船体応答計測に基づく時間領域波浪推定

  高見朋希, 陳曦, 岡正義

  Oct. 2021, 日本船舶海洋工学会講演会論文集, (33) (33)


• Extreme Tank Force Prediction by FORM Using Time Domain Numerical Simulation Based on SPH

  Tomoki Takami, Chong Ma

  Jun. 2021, The Proceedings of the 31st (2021) International Ocean and Polar Engineering Conference, English

  [Refereed]

  International conference proceedings


• Response Prediction Based on FORM with Extrapolated Karhunen-Loeve Ocean Waves

  Tomoki Takami, Jørgen Juncher Jensen, Ulrik Dam Nielsen

  May 2021, 日本船舶海洋工学会講演会論文集 第32 号, English


• Real-time deterministic prediction of wave-induced ship responses based on short-time measurements

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen

  Elsevier BV, Feb. 2021, Ocean Engineering, 221, 108503 - 108503, English

  [Refereed]

  Scientific journal


• Evaluation Method for the Maximum Wave Load Based on AIS and Hindcast Wave Data

  Masayoshi Oka, Tomoki Takami, Chong Ma

  Springer Science and Business Media Deutschland GmbH, 2021, Lecture Notes in Civil Engineering, 65, 308 - 320, English

  International conference proceedings


• A Study of Multi-Objective Optimization for Propulsion Performance and Cargo Capacity

  Yasuo Ichinose, Yusuke Tahara, Tomoki Takami, Azumi Kaneko, Takayoshi Masui, Daisuke Arai

  2021, Proceedings of the 14th International Symposium on Practical Design of Ships and Other Floating Structures, English

  [Refereed]

  International conference proceedings


• Experimental and Numerical Investigation of High Frequency Vibrations in Segmented Ship Model Using One-Way Coupling of CFD and FEM

  Sumit Kumar Pal, Kazuhiro Iijima, Akira Tatsumi, Masahiko Fujikubo, Tomoki Takami

  2021, MARSTRUCT2021, English

  [Refereed]

  International conference proceedings


• Deterministic Prediction of Wave-induced Ship Responses Based on Corrected Autocorrelation Functions

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen

  Oct. 2020, 日本船舶海洋工学会講演会論文集, (31) (31)

  Research society


• Estimation of autocorrelation function and spectrum density of wave-induced responses using prolate spheroidal wave functions

  Tomoki Takami, Ulrik Dam Nielsen, Jørgen Juncher Jensen

  Springer Science and Business Media LLC, Sep. 2020, Journal of Marine Science and Technology, English

  [Refereed]

  Scientific journal


• Extreme value prediction of nonlinear ship loads by FORM using Prolate Spheroidal Wave Functions

  Tomoki Takami, Kazuhiro Iijima, Jørgen Juncher Jensen

  Elsevier BV, Jul. 2020, Marine Structures, 72, 102760 - 102760, English

  [Refereed]

  Scientific journal


• 船型設計のフロントローディングによる全体最適設計

  一ノ瀬 康雄, 藤本 修平, 松尾 宏平, 高見 朋希

  2020, 海上技術安全研究所報告, 19-4, 467 - 472

  Scientific journal


• On the Assessment of Extreme Wave-induced Bending Moment of a Ship by FORM and Reduced Order Method Based on Coupled CFD and FEA

  Tomoki Takami, Shohei Ozeki, Kazuhiro Iijima

  Sep. 2019, PRADS2019, English

  [Refereed]

  International conference proceedings


• Experimental Assessment of FORM Based Approach for Predicting Extreme Value Distribution of Hull Girder Bending Moment in a Ship

  Tomoki Takami, Kazuhiro Iijima

  Lead, Jun. 2019, Proceedings of the ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2019), English

  [Refereed]

  International conference proceedings


• Efficient FORM Based Extreme Value Prediction of Nonlinear Ship Loads with an Application of Reduced Order Model for Coupled CFD and FEA

  Tomoki Takami, Yusuke Komoriyama, Takahiro Ando, Shohei Ozeki, Kazuhiro Iijima

  Lead, 2019, Journal of Marine Science and Technology, 25, 327 - 345, English

  [Refereed]

  Scientific journal


• Numerical Investigation into Combined Global and Local Hydroelastic Response in a Large Container Ship Based on Two-way Coupled CFD and FEA

  Tomoki Takami, Kazuhiro Iijima

  Lead, 2019, Journal of Marine Science and Technology, English

  [Refereed]

  Scientific journal


• Estimation of Wave Loads acted on Ships in Service based on AIS Data. - Evaluation of Operational Effects on the Maximum Loads -

  Masayoshi Oka

  Dec. 2018, Journal of the Japan Society of Naval Architects and Ocean Engineers, Japanese

  [Refereed]

  Scientific journal


• Extreme Value Distribution of Combined Hull Girder and Double Bottom Bending Moments in a Container Ship by FORM

  Kazuhiro Iijima

  Oct. 2018, Proceedings of 32nd Asian-Pacific Technical Exchange and Advisory Meeting on Marine Structures, English

  International conference proceedings


• Fatigue Damage Assessment Based on Actual Sea State Estimated from On-board Monitored Data

  Tomoki Takami

  Sep. 2018, 7th International Maritime Conference on DESIGN FOR SAFETY

  [Refereed]

  International conference proceedings


• Simulation Based Global Concept and Local Geometry Optimization for Ship Design Considering Propulsive Performance in Actual Seas and Fatigue Damage Evaluation by Using Global Oceanographic Model and Onboard Monitored Data

  Yusuke Tahara

  Aug. 2018, 32nd Symposium on Naval Hydrodynamics, English

  [Refereed]

  International conference proceedings


• Numerical Method to Estimate Fluid-Structure Interavtion Effect of Ships under Severe Wave Condition

  Tomoki Takami

  Jun. 2018, Proceedings of 37th International Conference on Ocean, Offshore and Arctic Engineering

  [Refereed]

  International conference proceedings


• Extreme Value Prediction of Whipping Response of a Ship by FORM Based on Coupled CFD and FEA Simulations

  Tomoki Takami

  May 2018, Proceedings of the third International Conference on Safety and Reliability of Ships, Offshore & Subsea Structures, English

  International conference proceedings


• A numerical simulation method for predicting global and local hydroelastic response of a ship based on CFD and FEA coupling

  Tomoki Takami, Sadaoki Matsui, Masayoshi Oka, Kazuhiro Iijima

  Lead, Elsevier Ltd, May 2018, Marine Structures, 59, 368 - 386, English

  [Refereed]

  Scientific journal


• Derivation of Design Irregular Wave for Assessing Vertical Strength of a Ship Considering Double Bottom Bending

  Tomoki Takami

  Lead, 2018, Journal of the Japan Society of Naval Architects and Ocean Engineers, (28) (28), 111 - 120, Japanese

  [Refereed]

  Scientific journal


• Development of CFD and FEA coupling method and its application to hydro-elastic response estimation

  Tomoki Takami

  Sep. 2017, Proceedings of 31st Asian-Pacific Technical Exchange and Advisory Meeting on Marine Structures

  International conference proceedings


• STUDY ON APPLICATION OF CFD AND FEM COUPLING METHOD TO EVALUATE DYNAMIC RESPONSE OF SHIP UNDER SEVERE WAVE CONDITION

  Tomoki Takami, Masayoshi Oka, Kazuhiro Iijima

  Lead, 2017, PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 7A, English

  [Refereed]

  International conference proceedings


• Experimental and Numerical Study of Damaged Box Girders under Longitudinal Bending Moment

  Yasuhira Yamada

  Jun. 2016, Proceedings of the 20th International Offshore and Polar Engineering Conference, English

  [Refereed]

  International conference proceedings


• Study on Evaluation of Structural Response Caused by Slamming Impact using CFD

  Tomoki Takami

  Mar. 2016, Proceedings of 3rd International Conference on Violent Flows

  [Refereed]

  International conference proceedings


• BUCKLING/ULTIMATE STRENGTH EVALUATION FOR CONTINUOUS STIFFENED PANEL UNDER COMBINED SHEAR AND THRUST

  Hiroaki Ogawa, Tomoki Takami, Akira Tatsumi, Yoshiteru Tanaka, Shinichi Hirakawa, Masahiko Fujikubo

  2016, PROCEEDINGS OF THE ASME 35TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING , 2016, VOL 3, English

  [Refereed]

  International conference proceedings


• Study on Buckling/Ultimate Strength of Continuous Stiffened Panel under In-plane Shear and Thrust

  Tomoki Takami

  Jun. 2015, Proceedings of the 19th International Offshore and Polar Engineering Conference, English

  [Refereed]

  International conference proceedings


• Model test on the ultimate longitudinal strength of a damaged box girder

  Yasuhira Yamada, Tomoki Takami

  2015, Analysis and Design of Marine Structures - Proceedings of the 5th International Conference on Marine Structures, MARSTRUCT 2015, 435 - 444

  International conference proceedings


• Boundary Condition for Buckling/Plastic Collapse Analysis of Continuous Stiffened Panel under Combined Thrust and Inplane Shear

  Masahiko Fujikubo

  2014, Proceedings of the ICTWS 2014 7th International Conference on Thin-Walled Structures, English

  International conference proceedings


• Finite element modeling of a continuous stiffened panel under combined inplane shear and thrust

  Masahiko Fujikubo

  2013, Proceedings of 27st Asian-Pacific Technical Exchange and Advisory Meeting on Marine Structures, English

  [Refereed]

  International conference proceedings


• A Consideration about the Applicability of Fluid-Structure Interaction Analysis to Water Impact Issues

  Tomoki Takami, Masayoshi Oka, Yasuhira Yamada

  Japan Society of Naval Architects and Ocean Engineers, 2012, Journal of the Japan Society of Naval Architects and Ocean Engineers, 16, 99 - 107

  [Refereed]

  Scientific journal


• Numerical study on the slamming impact of wedge shaped obstacles considering fluid-structure interaction (FSI)

  Yasuhira Yamada, Tomoki Takami, Masayoshi Oka

  2012, Proceedings of the International Offshore and Polar Engineering Conference, 1008 - 1016

  International conference proceedings


• A study of design loads for fatigue strength utilizing direct calculation under real operational conditions

  Masayoshi Oka, Tomoki Takami, Yoshitaka Ogawa, Ken Takagi

  Mar. 2011, Proceedings of 3rd International Conference on Marine Structures (MARSTRUCT2011), 3(1) (1), 317 - 323, English

  International conference proceedings


• Development of ISUM shear plate element and its application to progressive collapse analysis of plates under combined loading

  Zhiyong Pei, Tomoki Takami, Chu Gao, Jiaheng Fu, Yoshiteru Tanaka, Kazuhiro Iijima, Masahiko Fujikubo, Tetsuya Yao

  2010, Proceedings of the International Offshore and Polar Engineering Conference, 4, 773 - 780, English

  International conference proceedings

• OPTIMIZATION OF SHIP WEIGHT DISTRIBUTION CONSIDERING LONG-TERM RISK

  Tomoki Takami, Masaru Kitahara, Ulrik Dam Nielsen

  Lead, Jul. 2026, 17th World Congress on Computational Mechanics (WCCM) 10 th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS)


• Posterior Distribution Estimation of Parameters in Multiple Maneuvering Models Using Model-Test Data

  Yushin Ando, Tomoki Takami, Atsuo Maki, Keiji Katsumura, Masahiro Sakai

  Corresponding, Jun. 2026, 10 th International Symposium on Reliability Engineering and Risk Management


• An Introductory Study on Stochastic Evolution of Ship Motion with Parameter Uncertainty and Its SecondOrder Probabilistic Safety Interpretation

  Atsuo Maki, Tomoki Takami, Leo Dostal, Kouki Wakita, Keiji Katsumura, Masaru Kitahara

  Jun. 2026, 10 th International Symposium on Reliability Engineering and Risk Management


• Active Learning-Based Reliability Analysis Based on Noisy Wave Measurements

  Tomoki Takami, Masaru Kitahara, Hidetaka Houtani

  Lead, Jun. 2026, 10 th International Symposium on Reliability Engineering and Risk Management


• Nonlinear Time-Reversal Method for Efficient Probabilistic Design Wave Identification

  Wataru Fujimoto, Tomoki Takami

  Jun. 2026, 10 th International Symposium on Reliability Engineering and Risk Management


• 非線形逆時間計算に基づく設計不規則波の確率的評価

  藤本 航, 高見 朋希

  May 2026, 日本船舶海洋工学会講演会論文集 第42号


• KTモデルに対するベイズ事後分布を用いた確率制約に基づく方位 制御ゲイン設計

  勝村 佳司, 安東 勇進, 高見 朋希, 登尾 悠平, 酒井 政宏, 牧 敦生

  May 2026, 日本船舶海洋工学会講演会論文集 第42号


• 非線形波浪の統計的評価のための外挿法の提案

  日用啓太, 高見朋希

  Corresponding, May 2026, 日本船舶海洋工学会講演会論文集 (第42号)


• 不確実性を含んだ波浪中応答計測値を参照した確率的評価

  高見朋希, 北原優, 宝谷英貴

  Lead, May 2026, 日本船舶海洋工学会講演会論文集 (第42号)


• 船体応答の数値計算法と極値推定への応用

  高見朋希

  Lead, Dec. 2025, 日本船舶海洋工学会構造シンポジウム2025

  [Invited]


• 波浪中船体応答の確率論的評価について

  高見朋希

  Lead, Nov. 2025, 海上交通システム研究会

  [Invited]


• 不確かさを有する操縦運動応答確率分布の時間発展

  牧 敦生, 高見 朋希, Leo Dostal, 勝村 佳司, 脇田 康希

  Nov. 2025, 日本船舶海洋工学会講演会論文集, (第41号) (第41号)

  Report research institution


• TMCMC法によるKTモデルパラメータ事後分布推定の模型船実験データに基づく検証

  安東 勇進, 高見 朋希, 牧 敦生, 勝村 佳司, 酒井 政宏

  Nov. 2025, 日本船舶海洋工学会講演会論文集, (第41号) (第41号)

  Summary national conference


• Calculation method of second-order distribution of capsizing probability in beam sea

  Atsuo Maki, Masaru Kitahara, Leo Dostal, Masahiro Sakai, Tomoki Takami

  May 2025, 日本船舶海洋工学会講演会論文集, (40) (40)


• 船体横揺れ減衰の効率的なベイズ推定について

  高見朋希, 北原優, 牧敦生

  Lead, May 2025, 日本船舶海洋工学会講演会論文集, (40) (40)


• ANNを用いた耐航性計算法の学習

  高見朋希, 森亮太, 笹健児

  Lead, May 2025, 日本船舶海洋工学会講演会論文集, (40) (40)


• Phase-resolved Estimation of Ship Transfer Functions Using Response Measurements

  Tomoki Takami, Ulrik Dam Nielsen, Raphaël Emile Gilbert Moune, Jørgen Juncher Jensen

  Lead, Nov. 2024, 日本船舶海洋工学会講演会論文集, 39, English

  Summary national conference


• Bayesian Estimation of Roll Damping Based on Onboard Measurements

  Tomoki Takami, Masaru Kitahara, Atsuo Maki, Leo Dostal

  Lead, Nov. 2024, 日本船舶海洋工学会講演会論文集, 39, English

  Summary national conference


• 水槽への設計不規則波再現における波の非線形発達の影響

  宝谷 英貴, 高見 朋希, 藤本 航, 小森山祐輔, 松井 貞興

  May 2024, 日本船舶海洋工学会講演会論文集, (38) (38)


• FORMによるパラメトリック横揺れの極値予測に関する実験的研究

  高見 朋希, 栁本 史教, 武田 勝利, 石橋 公也, 大田 大地

  Lead, May 2024, 日本船舶海洋工学会講演会論文集, (38) (38)


• AK-MCMC法と波浪場のKL展開による船体応答の 極値予測

  高見朋希, 北原優

  Lead, May 2024, 日本船舶海洋工学会講演会論文集, (38) (38)


• Study on Dynamic Elastic Response Based on Water Impact Load

  岡正義, 高見朋希, 小沢匠, 山田安平, 田中義照

  2019, 海上技術安全研究所報告(Web), 18(3) (3)


• Consistent Evaluation on Performance of Structural Strength, Propulsion and Added-resistance in Waves Considering Actual Sea State in Operation and Its Application to Hull Shape Optimization

  高見 朋希, 一ノ瀬 康雄, 金子 杏実, 岡 正義, 田原 裕介, 新井 大介, 益井 崇好, 水谷 直樹

  日本船舶海洋工学会, Nov. 2017, 日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers, (25) (25), 621 - 625, Japanese


• 実運航海象を考慮した構造・推進・波浪中性能一貫評価と船型最適化への応用について

  高見朋希, 一ノ瀬康雄, 金子杏実, 岡正義, 田原裕介, 新井大介, 益井崇好, 水谷直樹

  2017, 日本船舶海洋工学会講演会論文集(CD-ROM), (25) (25)


• Basic Study on Estimation Method of Water Impact Load using CFD(2nd Report)

  高見 朋希, 岡 正義

  日本船舶海洋工学会, Nov. 2015, 日本船舶海洋工学会講演会論文集, (21) (21), 465 - 468, Japanese


• Basic Study on Estimation Method of Water Impact Load using CFD

  高見 朋希, 岡 正義

  日本船舶海洋工学会, May 2015, 日本船舶海洋工学会講演会論文集, (20) (20), 291 - 294, Japanese


• Ultimate Strength Assessment of Continuous Stiffened Panel under Shear and Thrust(3rd report)Establishment of Ultimate Strength Assessment

  小河 寛明, 高見 朋希, 藤久保 昌彦, 宮田 知明, 辰巳 晃, 田中 義照, 平川 真一, 安藤 孝弘

  日本船舶海洋工学会, May 2015, 日本船舶海洋工学会講演会論文集, (20) (20), 283 - 286, Japanese


• 衝突による損傷を想定した船舶の縦曲げ崩壊模型実験について(第2報)

  山田安平, 高見朋希

  2015, 日本船舶海洋工学会講演会論文集(CD-ROM), (20) (20)


• Ultimate strength assessment of continuous stiffened panel under shear and thrust(2nd report)Shear buckling collapse behavior and ultimate strength assessment

  小河 寛明, 高見 朋希, 藤久保 昌彦

  日本船舶海洋工学会, Nov. 2014, 日本船舶海洋工学会講演会論文集, (19) (19), 471 - 474, Japanese


• Ultimate strength assessment of continuous stiffened panel under shear and thrust : Shear buckling collapse tests of stiffened panel

  小河 寛明, 高見 朋希, 藤久保 昌彦

  日本船舶海洋工学会, May 2014, 日本船舶海洋工学会講演会論文集, (18) (18), 467 - 470, Japanese


• LS-DYNAを用いた水面衝撃問題に関する流体構造連成解析

  高見朋希, 岡正義, 山田安平

  2014, 計算工学講演会論文集(CD-ROM), 19


• 衝突による損傷を想定した船舶の縦曲げ崩壊模型実験について

  高見朋希, 佐久間正明, 山田安平

  2014, 日本船舶海洋工学会講演会論文集(CD-ROM), (19) (19)


• 非線形動的構造解析を用いた水面衝撃問題に関する一考察

  高見朋希, 山田安平

  2012, 日本船舶海洋工学会講演会論文集(CD-ROM), (14) (14)


• An Investigation of an Effect of Nonlinear Wave Load on a Structural Failure Probability of a Ship

  小川 剛孝, 高見 朋希

  日本船舶海洋工学会, May 2011, 日本船舶海洋工学会講演会論文集, (12) (12), 169 - 172, Japanese


• A study for the advanced assessment of structural strength: the development of NMRIW and NMRI-DESIGN, and its course

  小川 剛孝, 岡 正義, 高見 朋希

  海上技術安全研究所, 2011, 独立行政法人海上技術安全研究所研究発表会講演集, 11, 9 - 16, Japanese


• 非線形動的構造解析を用いた楔型物体の水面衝撃問題に関する考察

  高見朋希, 山田安平

  2011, 日本船舶海洋工学会講演会論文集(CD-ROM), (13) (13)


• Development of ISUM shear plate element and its application to progressive collapse analysis of plates under combined loading(Summaries of Papers published by Staff of National Maritime Research Institute at Outside Organizations) :

  Pei Zhiyong, Gao Chu, Fu Jiaheng

  海上技術安全研究所, 2010, 海上技術安全研究所報告, 10(2) (2), 220 - 220, Japanese

• Wave-induced Response Prediction Using Prolate Spheroidal Wave Function

  Tomoki Takami

  DNV GL NORDIC MARITIME UNIVERSITY WORKSHOP 2020, Jan. 2020, English

  Oral presentation

• THE JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE


• THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS

• リアルワールド不確実性を考慮した操縦モデル逆推定に基づくロバスト制御

  牧 敦生

  日本学術振興会, 科学研究費助成事業, 基盤研究(B), 大阪大学, Apr. 2026 - Mar. 2029, Coinvestigator


• 外洋における大型コンテナ船の貨物荷崩れのメカニズム解明と海難防止

  笹 健児

  日本学術振興会, 科学研究費助成事業, 基盤研究(B), 神戸大学, Apr. 2025 - Mar. 2029


• 風波連成を考慮した洋上風車の信頼性設計法の構築

  高見 朋希

  日本学術振興会, 科学研究費助成事業, 挑戦的研究(萌芽), 神戸大学, Jun. 2026 - Mar. 2028


• 能動学習を用いた波浪中船体横揺れ運動の極値推定法の開拓

  高見 朋希

  日本学術振興会, 科学研究費助成事業, 基盤研究(B), 神戸大学, Apr. 2025 - Mar. 2028


• 高速船舶の遭遇海象及び応答推定法の高度化

  高見朋希

  日本船舶海洋工学会, 海外共同研究促進事業, Apr. 2025 - Mar. 2027


• 波浪中船体極値応答に対する波群の発達および波の多方向性の影響

  宝谷 英貴

  日本学術振興会, 科学研究費助成事業, 基盤研究(B), 東京大学, Apr. 2024 - Mar. 2027


• 機械学習を用いた耐航性コードの学習による波浪推定技術の高度化

  造船学術研究推進機構(REDAS), Apr. 2025


• Influence of the nonlinearities in waves, ship-motions, and ship-structure-responses on the expected maximum load on the ship's life

  宝谷 英貴, 高見 朋希, 松井 貞興, 小森山 祐輔

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), The University of Tokyo, 01 Apr. 2021 - 31 Mar. 2024


• 実海域ビッグデータを活用した波浪荷重予測手法の開発

  岡 正義, 馬 沖, 高見 朋希

  日本学術振興会, 科学研究費助成事業 基盤研究(B), 基盤研究(B), 国立研究開発法人海上・港湾・航空技術研究所, 01 Apr. 2021 - 31 Mar. 2024

  全球海域、船長Lが100m以上のワールドワイドを航行するコンテナ船(4,892隻)、オイルタンカー(2,697隻)、バルクキャリア(9,852隻)を対象として、船舶位置データ（AISデータ）及び、風況データを元に推定した波浪データ（波浪推算データ）に基づき、実際に就航する船舶に作用した波浪中縦曲げモーメントの長期予測を行ない、長期最大荷重の統計解析を行なった。統計解析に先駆けて、波浪荷重を推定するための数値計算プログラムを14000TEU型大型コンテナ船の応力モニタリングデータを用いて検証し、目的達成に十分な精度を有することを確認した。統計解析の結果、就航船の縦曲げモーメントは、船舶の荒天回避等の操船影響により、全ての個船において設計標準の波浪発現頻度表を用いた長期予測値を20から50％下回ること，そしてその影響度は大型化に伴って大きくなる傾向にあることを示した．さらに、全就航船の99.9%の船が現行の規則が要求する縦曲げモーメントを下回ることを示した．また、規則要求値に近い大荷重が発生した海域は，コンテナ船及びタンカーは北大西洋が多く，バルクキャリアは相対的にみて北太平洋が多いことをデータ解析により確認した． また、短時間計測に基づいた時間領域波浪推定法を提案し，波向き一定の長波頂不規則波中の船体運動の数値シミュレーションを用いてその有効性を示した．本手法は周波数領域推定法では計測時間が短くなると相対波向きの推定精度が低下する一方で，本時間領域推定法では正確な相対波向き推定が可能であることが分かった． これらの成果により、波浪中での安全運航指針の作成やデータドリブンの合理的設計の実現及び規則開発を実現できる見通しを得た。


• Extreme Value Prediction Method of Combined Load Response in a Ship Using KL Expansion Based Wave Representation and Reduced Order Model

  高見 朋希, 大橋 訓英, 安藤 孝弘, 馬 沖, 飯島 一博

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), National Institute of Maritime, Port and Aviation Technology, Apr. 2019 - Mar. 2023

  構造信頼性理論であるFirst Order Reliability Method (FORM)による極値予測法をProlate Spheroidal Wave Functions(PSWF)を用いたKL展開ベースの波浪表現に適用する計算環境を整えている。今年度は、評価対象をメモリ時間の長い船体ロール運動として、本手法の適用限界を調べた。メモリ時間の長い応答にはKL展開ベースの波浪表現の時間制限による適用限界があったが、KL展開波を外挿することで多少の改善が見込まれた。ただし、改善はわずかであり、他のアプローチの必要性も強調された。一方で、新たなアプローチとして、応答の初期値を調整することによる効率的なKL展開波の適用について調査した。


• Fundamental study on integrated fluid, structure and production design method considering mathematical simulation and its UQ

  Ichinose Yasuo

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), National Institute of Maritime, Port and Aviation Technology, 01 Apr. 2017 - 31 Mar. 2020

  In this study, we propose a new design scheme based on onboard monitoring data and also introduce an integrated design system for hydrodynamic performance in calm sea and waves, and structural strength. Besides, we developed a prototype of a consistent evaluation system of hydrodynamic performance and productivity to realize front-loading of ship designs and a design system to optimize loading capacity and fluid performance in a multi-objective point of view considering structural member arrangement of stern hull shapes. Trial designs of bulk carry demonstrate the effectiveness of these systems, and it was clarified that the integrated design method to carry out multi-objective optimization proposed from the viewpoint of interdisciplinary leads not only to efficiency improvement of design but also to the transmission of design technology and improvement of customer satisfaction.


• Reliability analysis of ship structure subjected to combined loads taking account of phase difference among loads

  Iijima Kazuhiro

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Osaka University, Apr. 2017 - Mar. 2020

  This research addresses the structural safety assessment of a ship under combined loads including hull girder bending moment, local double bottom bending moment, and whipping moment. A simulation technique coupled between CFD(Computational Fluid Dynamics) and FEM(Finite Element Method) is developed. The developed method is shown to be effective in evaluating the combined loads and a ship’s response under the combined loads. By adopting a surrogate model with the simulation method above and FORM(First Order Reliability Method), the extreme combined loads and load effects including the hydroelastic vibrations under the irregular waves are obtained. The results are validated against scaled model tests. By adopting the FORM again, the structural reliability of a ship under the combined loads are assessed.


• Development of Ship-Hull Form SBD System by Introducing Reliability-based Design Optimization Theory for Optimal Real-Ocean Cruising Performance and FSI Analysis

  Tahara Yusuke

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), National Institute of Maritime, Port and Aviation Technology, 01 Apr. 2015 - 31 Mar. 2018

  The present project concerns with development and demonstration of Simulation-Based Design (SBD) framework for ship hull form design. Each basic component in a previously developed prototype is modified and extended, and reintegrated for a more capable SBD; where, real-ocean ship-cruising performance can be considered in the multi-objective reliability-based design optimization theory and fluid-structure interaction (FSI) analysis. In addition, the present framework is aimed to be a readily applicable, next-generation advanced design tool in the domestic shipyards by introducing tight interface with the most widely accepted CAD system in the design field. All tasks were successfully completed, and the realized SBD framework was shown very promising. Activities of the present work were reported in several international/domestic refereed journal and conference papers.


• Development of analytical method on high-lift composite sail by using fluid-structure interaction system

  Takami Tomoki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), National Institute of Maritime, Port and Aviation Technology, Apr. 2014 - Mar. 2017

  A coupling system composed of the Reynolds Averaged Navier Stokes (RANS)-based CFD and non-linear FEM is proposed to establish an evaluation method on the performance of high-lift composite sails accounting for the elastic deformation of the soft sail. Besides, a three dimensional shape reproducing method by using the imagery analysis method is adopted in measuring the deformation of the soft sail, while it is validated by comparing with the wind-tunnel experiment with a scaled sail model. It turned out that the developed coupling system is able to estimate the hydrodynamic forces and the elastic deformation with a good accuracy. Further tasks regarding its application to the multi-sail are also turned out through the wind-tunnel test with a multi-sail model.


• A fundamental study on fatigue life evaluation taking the load sequence of whipping into account.

  MASAYOSHI Oka, NIWA Toshio, TAKAMI Tomoki, TAKAGI Ken

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), National Maritime Research Institute, 01 Apr. 2012 - 31 Mar. 2015

  The fatigue crack length at 25 years old was simulated using the fatigue crack propagation analysis inputted a long-term stress history of a large container ship based on the storm model and stress RAO(Response Amplitude Operator). In order to simulate the delay phenomenon of fatigue crack growth, the fatigue crack propagation analysis program based on cohesive force model focuses on the plastic behavior of the crack tip, and it was extended to be able to treat any random waveform. The effect of whipping on fatigue life becomes clear in terms of crack length, the safety level of the Minor's law which generally adopted as current fatigue design was clarified .


• On the development of simplified method of utlimate strength and aplication of the method to risk-based design

  YASUHIRA Yamada, TANAKA Yoshiteru, TAKAMI Tomoki, KANEKO Fujio

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), National Maritime Research Institute, 01 Apr. 2012 - 31 Mar. 2015

  Loss of life as well as disastrous environmental pollution may happen if ships is subjected to significant damage including ship collisions. Residual strength is defined as a strength that ships have sufficient strength even in damaged condition. It is important to have sufficient residual strength in order to preserve safety of life at sea as well as protection of environment. In the present study, in order to find out a mechanism of ship breaking in damaged condition a scale-model test as well as a series of state-of-the art numerical simulations were carried out and a research to develop advanced methods to estimate residual strength is carried out.


• A study for residual stability and strength for the safe return to port

  YOSHITAKA Ogawa, TAKAGI Ken, YAMADA Yasuhira, OKA Masayoshi, TAKAMI Tomoki, SHIRAISHI Koichiro

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), National Maritime Research Institute, 01 Apr. 2011 - 31 Mar. 2014

  Firstly, by applying a physical model which is based on the model test, a estimation method for wave loads of the damaged ship under towing is developed. Secondly, mathmatical model for probability of capsizing that takes the probability of structural failure of ship hull is also developed. In this study, ultimate strength is assumed as a threshold value for a structural failure. Finally, by the combination of those probability, conditional probability of capsizing and failure was developed. Furthermore, series computation of those probability was carried out to find the dominant probability in the comprehensive assessment.