COMPUTATIONS OF CARGO SHIP MANOEUVRES FROM MODEL TESTS IN A ROTATING ARM FACILITY AND COMPARISON WITH FULL SCALE TRIALS

For a cargo ship turning circles, spiral tests, and zig- zag tests are computed with the aid of the equations of motion for the motion parallel with the undisturbed water surface. The coefficients of the ship attacking forces and moments necessary to that has been determined by measurements on a 2m-model in a rotating arm facility. The results of the computations of manoeuvres are compared with the results of full scale trials. The comparison shows the influence of the scale effects due to the injury of the Reynolds's law on the model tests. Computations of manoeuvres on the basis of rotating arm tests are also very suitable - without very good knowledge of the scale effects - for the investigation of the influence of changes of trim or changes in the hull form on the steering and the straight line stability of a ship.

• Supplemental Notes:
  • Presented at the 14th International Towing Tank Conference, 1975.
• Corporate Authors:

  National Research Council of Canada

  1200 Montreal Road
  Ottawa, Ontario  Canada  K1A 0R6
• Authors:
  • Kleinau, D
• Publication Date: 1975

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Prototype tests; Reynolds number; Ship trials; Spiral flow tests; Turning radius; Zig zag tests
• Uncontrolled Terms: Scale effect
• Old TRIS Terms: Model testing; Spiral tests; Turning circle calculations
• Subject Areas: Education and Training; Marine Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00323638
• Record Type: Publication
• Source Agency: Stevens Institute of Technology
• Files: TRIS
• Created Date: Mar 12 1981 12:00AM