Shiphandling Simulation Application to Waterway Design (1992) / Chapter Skim
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8. Research Needs
8. Research Needs
Pages 75-83
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From page 75... ...
As reflected in the case studies, the benefits of shiphandling simulation for visualization of waterway design problems and of consensus building are nonetheless great. GAPS IN THE STATE OF PRACTICE The committee's review of the use of shiphandling simulators for waterway design revealed an overall concern for validity and five specific technology areas that could benefit from substantial research.
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From page 76... ...
A research program to fill these gaps is not presently being undertaken in the United States. Moreover, from a review of the state of practice of shiphandling simulation for waterway design in foreign countries, the committee found no evidence that such a comprehensive research program is being conducted abroad.
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From page 77... ...
Investigations of the adequacy of the framework can be based on the use of different known models for one ship type and models for several representative waterways. Investigations of the accuracy of the coefficients probably will involve systematic perturbations of the mathematical models for several different ship types and for several representative waterways.
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From page 78... ...
This constitutes a significant gap in the validation tools for waterway design. Associated research opportunities include · the development of new, efficient techniques that could reasonably be expected to identify numerical coefficients for a mathematical maneuvering model for restricted waterways to the level of accuracy required, and · the development of techniques for safely conducting full-scale tests in typical waterway situations and for analyzing the results to calibrate and validate the mathematical models.
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From page 79... ...
Because the accuracy of the mathematical models of ship behavior is in question, the setup of a simulator facility is so costly, and the collateral benefits of simulation (for example, consensus building) are often an important objective, less emphasis has been placed on developing a formal framework for interpreting marine simulation results than on simulation in other industries.
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From page 80... ...
For instance, simulators designed to train personnel in the art of aircraft handling include both objective measures, for instance calibration against measured performance characteristics (such as turning circles) and subjective measures, such as pilot confidence, that the simulator behaves like a real airplane (Appendix F)
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From page 81... ...
when testing ship maneuverability in situations with very small under-keel clearances. The research program necessary to put shiphandling simulation for waterway design on ~ firmer scientific basis, thereby greatly increasing the confidence of the entire maritime community in the usefulness of the te~chnique, would be ambitious, expensive, and long range.
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From page 82... ...
This research program could take full advantage of available expertise and capabilities at existing simulation and research facilities throughout the United States to ensure that the selected research plan is focused on the areas of greatest need, is sufficiently comprehensive, and is cost-effective.
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From page 83... ...
Because of the complex scientific basis for simulation and the hardware associated with it, the research required to fill those gaps Is essential for full utility and acceptability of the technique, albeit its expense. Currently, no government agency, commercial enterprise, or research organization has undertaken or appears ready to undertake a dedicated research program on shiphandling simulation.
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