INVESTIGATIONS ON THE STEERING ABILITY OF THE NEPTUN (ROSTOCK) SHIPYARD'S "PIONER" (TYPE 301) CARGO SHIP. PART II. MOTION CALCULATIONS AND COMPARISON WITH FULL-SCALE TRIALS
For Part I of this article, see Abstract No. 45,757 (May 1977). In the determination of a ship's course-keeping behaviour and steering characteristics from model tests, two main problem areas are the calculation of motions and model/ship correlation. The Author gives an account of an investigation and analysis of these problem areas. The model tests referred to were carried out in a rotating-arm basin. Accurate predictions for the steering properties of a new ship, based only on model tests, will not be possible for some time to come, and the investigation thus represents a foundation for further work aimed at developing acceptable methods for investigating the steering ability of a ship by means of measurements in the rotating-arm basin. In the comparison of full-scale results (for the "Pioner" cargo ship)with the results of calculations carried out with the force and moment coefficients derived from measurements on a 2-m model, it was found in general that the model measurements led to too large a turning-circle being predicted and to an underestimate of the dynamic yaw-stability. However, the investigation has also shown that, even with the existing knowledge of scale effect it is still possible for the designer to use model tests to clarify problems such as the effects of variations in trim and in hull-form on the ship's steering ability and dynamic yawing-stability. Order from: BSRA as No. 46,882.
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Corporate Authors:
Institut fuer Schiffbau
Wismarsche Strasse 617
25 Rostock, Germany -
Authors:
- Kleinau, D
- Publication Date: 1976
Language
- German
Media Info
- Features: References;
- Pagination: 11 p.
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Serial:
- Schiffbauforschung
- Volume: 15
- Publisher: Institut fuer Schiffbau
Subject/Index Terms
- TRT Terms: Cargo ships; Prototype tests; Ship motion; Steering; Turning radius; Yaw; Yaw
- Old TRIS Terms: Course stability; Model testing; Steering characteristics; Turning circle calculations
- Subject Areas: Education and Training; Marine Transportation; Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00170183
- Record Type: Publication
- Source Agency: British Ship Research Association
- Files: TRIS
- Created Date: Mar 7 1978 12:00AM