Features of an Ultra-large Container Ship Mathematical Model Adjustment Based on the Results of Sea Trials
The research addresses the problem of an ultra-large container ship mathematical model adjustment based on sea trials. In order to verify the model’s adequacy, simulated data had to be compared to the trial report data, which was obtained in ballast condition with significant trim. In such circumsta...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Gdynia Maritime University
2020-03-01
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| Series: | TransNav: International Journal on Marine Navigation and Safety of Sea Transportation |
| Subjects: | |
| Online Access: | http://www.transnav.eu/files/Features of an Ultralarge Container Ship Mathematical Model Adjustment Based on the Results of Sea Trials,990.pdf |
| Summary: | The research addresses the problem of an ultra-large container ship mathematical model adjustment based on sea trials. In order to verify the model’s adequacy, simulated data had to be compared to the trial report data, which was obtained in ballast condition with significant trim. In such circumstances, model coefficients cannot be calculated by known methods and have to be corrected as per trial data. It is proposed to determine translational motion coefficients first. To get optimal results, it was also proposed to divide the objective function into kinematic and dynamic components, with each component being assigned a weighting factor. A separate objective function component was assigned to the zig-zag maneuver, which includes the first and second overshoot angles. |
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| ISSN: | 2083-6473 2083-6481 |