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April 19, 2026Ocean EngineeringOpen Access

Turning and zig-zag maneuvers of ships with large block coefficients under full- and ballast-load conditions

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Authors

HYHironori YasukawaNHNoritaka Hirata

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Overview

Investigates ship maneuverability during turning and zig-zag maneuvers, indicating implications for compliance with maritime regulations.

Key Points

  • This research aims to explore the differences in ship maneuverability between full- and ballast-load conditions.
  • Conducted free-running tests using three ship models with varying block coefficients.
  • Tested turning and zig-zag maneuvers under both full-load and ballast-load conditions.
  • Performed captive model tests to measure hydrodynamic forces during maneuvering.
  • Turning indices are smaller under full-load conditions compared to ballast-load conditions.
  • Overshoot angles during zig-zag maneuvers are 2-3 times larger under full-load conditions.
  • Yaw moment derivative values under full-load conditions are approximately twice those under ballast-load conditions, affecting course stability.

Cite This Study

Yasukawa et al. (2026) studied this question.

synapsesocial.com/papers/69e472a8010ef96374d8e9ddhttps://doi.org/10.1016/j.oceaneng.2026.125607
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