Investigation of Seakeeping Performance of Trawler by the Influence of the Principal Particulars of Ships in the Bering Sea

Nguyen, Thi Thanh Diep; Vu, Hoang Thien; Cho, Aeri; Yoon, Hyeon Kyu

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J. Ocean Eng. Technol. > Articles in press

Original Research Article

Published online March 28, 2024.
DOI: https://doi.org/10.26748/KSOE.2023.038 [Articles in press]

Investigation of Seakeeping Performance of Trawler by the Influence of the Principal Particulars of Ships in the Bering Sea

Thi Thanh Diep Nguyen¹

, Hoang Thien Vu²

, Aeri Cho³

, Hyeon Kyu Yoon⁴

¹Researcher, Department of Naval Architecture and Marine Engineering, Changwon National University, Changwon, Korea
²Graduate Student, Department of Naval Architecture and Marine Engineering, Changwon National University, Changwon, Korea
³Graduate Student, Department of Smart Environmental Energy Engineering, Changwon National University, Changwon, Korea
⁴Professor, Department of Naval Architecture and Marine Engineering, Changwon National University, Changwon, Korea

Corresponding author: Hyeon Kyu Yoon, Tel: +82-55-213-3683, hkyoon@changwon.ac.kr

Received November 17, 2023 Revised January 8, 2024 Accepted March 12, 2024

Keywords: Trawler, Ship motion responses, Principal dimensions, Seakeeping performance, Sensitive analysis

Abstract

Investigating ship motion under real conditions is vital for evaluating the seakeeping performance, particularly in the design process stage. This study examined the influence of the principal particulars of a trawler on its seakeeping performance. The wave conditions in the Bering Sea are investigated using available data. The length-to-beam (L/B) and beam-to-draft (B/T) ratios of the ship are changed by 10% for the numerical simulation. The response amplitude operator (RAO) motion, root mean square (RMS) value and sensitivity analysis are calculated to evaluate the influence of the trawler dimensions on ship motions. The peak RAO motion affected the ship motions noticeably because of the resonance at the natural frequency. The L/B and B/T ratios are important geometric parameters of a ship that significantly influence its RMS motion, particularly in the case of roll and pitch. The change in the B/T ratio has a good seakeeping performance based on a comparison of the roll and pitch with the seakeeping criteria. The present results provide insights into the seakeeping performance of ships due to the influence of the principal dimensions in the design stage.