NON-LINEAR PREDICTION OF STEERING PERFORMANCE OF SERIES 60 MODELS

Hydrodynamic forces and moments due to ship motions in the horizontal plane were obtained in tests of 5-foot Series 60 models, and results were used in computations of ship motions in calm water. Non-linear predictions of ship response to rudder action are correlated satisfactorily in comparison with trajectories of a free-running model. Variations of ship maneuvering motions with changes in ship configuration are then examined, and the relationship between maneuvering response and rudder rate is studied, using non-linear computation, to obtain a basis for determining optimum rudder rate for ships of different speed and size. Computed results show that the minimum rudder rate presently allowed is adequate for ocean trading ships of ordinary size and speed; however, this "adequate" rudder rate could be lower for very large, relatively slow ships, such as super-tankers.

• Supplemental Notes:
  • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number SIT-R-1089.
• Corporate Authors:

  Stevens Institute of Technology

  Davidson Laboratory, Castle Point Station
  Hoboken, NJ  United States  07030
• Authors:
  • Eda, H
  • Crane Jr, C L
• Publication Date: 1967-6

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 71 p.

Subject/Index Terms

• TRT Terms: Hydrodynamic pressure; Rudders; Ship motion; Steering
• Old TRIS Terms: Course stability; Hydrodynamic forces; Steering characteristics
• Subject Areas: Design; Marine Transportation; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00027032
• Record Type: Publication
• Source Agency: Maritime Administration
• Report/Paper Numbers: 1089
• Contract Numbers: MA-2701
• Files: TRIS, USDOT
• Created Date: Feb 14 1973 12:00AM