STEERING AND MANEUVERING OF SHIPS--FULL SCALE AND MODEL TESTS. PART II

A planar motion mechanism (PMM) can be used in model testing to generate cyclic motions when operating in the dynamic mode, or in the static mode. The article describes the present PMM in use and compares it to a new PMM which has recently been designed. The author analyzes the results of the force measurements obtained from the present PMM and compares then to the results obtained from the new PMM. About 55 complete PMM tests have been carried out on 35 different models. Most of the tests have been done for customers, and therefore, no details of ship particulars are given. The formulae used in the tests are given and described with the effect of trim, speed, non-dimensional mass, and other variables on the coefficients being explained. A summary of the results of the tests with regard to steering by hand and by autopilot is given.

• Corporate Authors:

  Scandinavian Ship Technical Society

  Radhusgt 8, Box 162
  Oslo,   Norway 
• Authors:
  • Smitt, L W
• Publication Date: 0

Media Info

• Features: Figures; Photos;
• Pagination: 10 p.
• Serial:
  • European Shipbuilding
  • Volume: 20
  • Issue Number: 1
  • Publisher: Scandinavian Ship Technical Society

Subject/Index Terms

• TRT Terms: Maneuvering; Ship motion
• Old TRIS Terms: Model testing; Planar motion mechanism
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00019596
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: Nov 25 1973 12:00AM