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Publishing Language: Chinese

Numerical analysis on maneuverability of amphibious rescue boat in restricted waters

Jiadong WEN1, Jiangyan SHAO1( ), Qipeng CHENG1, Weiqin LIU1, Xuming WANG2,3,4
School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Intelligent Transportation Systems Research Center, Wuhan University of Technology, Wuhan 430063, China
State Key Laboratory of Maritime Technology and Safety, Wuhan 430063, China
National Engineering Research Center for Water Transport Safety, Wuhan University of Technology, Wuhan 430063, China
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Abstract

Objectives

To study the maneuverability of amphibious rescue boats in restricted waters, a method for predicting maneuvering motion is proposed and the maneuvering performance of rescue boats in nearshore and shallow waters is investigated.

Methods

A CFD-based maneuverability analysis method is adopted to solve the hydrodynamic characteristics of amphibious rescue boats and analyze their maneuvering performance in restricted waters through maneuvering motion equations. For the analysis of the maneuverability of amphibious rescue boats in restricted waters, a fourth-order Runge-Kutta maneuvering motion equation solver is independently developed, then verified and applied to analyze the turning performance and correction capabilities of rescue boats in nearshore and shallow waters.

Results

The results show that when the nearshore distance decreases to 1.2 times the beam of the boat, the tactical diameter decreases by 5.86%, the turning performance is improved, and the maneuverability is halved; when the water depth to draft ratio decreases to 1.2, the tactical diameter of the boat increases by 1.5 times, and the turning performance is significantly decreased, and the bow turning lag time disappears.

Conclusions

The results of this study indicate that the proposed method can be used to predict the maneuvering motion of rescue boats in restricted waters and is suitable for the optimization of the maneuverability design of rescue boats.

Keywords

amphibious rescue boatsrestricted watersmaneuverabilityhydrodynamic characteristicsnumerical analysis
CLC number: U674.91；U661.33 Document code: A

References

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Chinese Journal of Ship Research
Volume 20 Issue 3,
June 2025
Pages 80-91
DOI: 10.19693/j.issn.1673-3185.03934

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Cite this article:
WEN J, SHAO J, CHENG Q, et al. Numerical analysis on maneuverability of amphibious rescue boat in restricted waters. Chinese Journal of Ship Research, 2025, 20(3): 80-91. https://doi.org/10.19693/j.issn.1673-3185.03934

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Received: 22 May 2024
Revised: 02 September 2024
Published: 30 October 2024
© 2025 Chinese Journal of Ship Research.