TY - JOUR
T1 - Comparative study of realistic ship motion simulation for optimal ship routing of a bulk carrier in rough seas
AU - Waskito, Kurniawan T.
AU - Sasa, Kenji
AU - Chen, Chen
AU - Kitagawa, Yasushi
AU - Lee, Sang Won
N1 - Funding Information:
The authors wish to extend their gratitude to Shoei Kisen Kaisha, Ltd. and Imabari Shipbuilding Co. Ltd. for their cooperation in conducting onboard measurements of the 28,000-DWT bulk carrier from 2010 to 2016. This study was financially supported by Scientific Research (B) (Project No. 20H02398, 2020–2024, represented by Kenji Sasa) and Fostering Joint International Research (B) (Project No. 18KK0131, 2018–2022, represented by Kenji Sasa) under Grants-in-Aid for Scientific Research, Japan Society for Promotion and Science.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/9/15
Y1 - 2022/9/15
N2 - Accurate estimation of ship motions is inevitable for safe, economical, and environmentally friendly ship routing. Onboard measurements have been conducted for a bulk carrier in 2010–2016, including eight rough seas in the Northern and Southern Hemispheres. Rough sea conditions were reproduced using a wave model, WaveWATCH III, with wind inputs from meteorological organizations. Ship performances were evaluated using traditional seakeeping theories, with the main focus being on transverse motion. The 3D frequency-domain Rankine Panel Method (RPM), New Strip Method (NSM), and Enhanced Unified Theory (EUT) were compared. First, roll decay tests and simplified Ikeda's methods of roll damping were applied in each method. Second, the results of the model tests in oblique seas in regular waves were additionally considered for the accurate estimation of ship motions in actual seas. These were validated with measured ship motions in eight rough sea voyages. It was found that errors are smaller in the RPM than those in the EUT and NSM for measured roll and pitch motions in actual seas. The favorable results obtained using the proposed methods may provide a new alternative for optimal ship routing to predict ship roll and pitch motions in rough seas with reliable accuracy and computational efficiency.
AB - Accurate estimation of ship motions is inevitable for safe, economical, and environmentally friendly ship routing. Onboard measurements have been conducted for a bulk carrier in 2010–2016, including eight rough seas in the Northern and Southern Hemispheres. Rough sea conditions were reproduced using a wave model, WaveWATCH III, with wind inputs from meteorological organizations. Ship performances were evaluated using traditional seakeeping theories, with the main focus being on transverse motion. The 3D frequency-domain Rankine Panel Method (RPM), New Strip Method (NSM), and Enhanced Unified Theory (EUT) were compared. First, roll decay tests and simplified Ikeda's methods of roll damping were applied in each method. Second, the results of the model tests in oblique seas in regular waves were additionally considered for the accurate estimation of ship motions in actual seas. These were validated with measured ship motions in eight rough sea voyages. It was found that errors are smaller in the RPM than those in the EUT and NSM for measured roll and pitch motions in actual seas. The favorable results obtained using the proposed methods may provide a new alternative for optimal ship routing to predict ship roll and pitch motions in rough seas with reliable accuracy and computational efficiency.
KW - Onboard measurement
KW - Optimal ship routing
KW - Rankine panel method
KW - Roll damping
KW - Rough sea navigation
KW - Ship motion
UR - http://www.scopus.com/inward/record.url?scp=85136082968&partnerID=8YFLogxK
U2 - 10.1016/j.oceaneng.2022.111731
DO - 10.1016/j.oceaneng.2022.111731
M3 - Article
AN - SCOPUS:85136082968
SN - 0029-8018
VL - 260
JO - Ocean Engineering
JF - Ocean Engineering
M1 - 111731
ER -