FULL SCALE MEASUREMENT OF FREQUENCY RESPONSE CHARACTERISTICS OF SHIPS IN STEERING

This paper shows the results of steering tests on eight ships ranging from 360 gt to 220,000 dwt. The test method was presented in "A new procedure of maneuvering model experiment." The purpose was to determine four characteristic constants of actual ships by means of a frequency response analysis of parallel shift manoeuvring and trapezoidal steering tests with fixed periods. Figures are also presented dealing with a phase plane analysis on a parallel shift manoeuvre to determine the characteristic constants. Results showed the parallel shift manoeuvre and periodic trapezoidal steering is a promising procedure to determine the steering characteristic constants. Both steering tests apply to phase plane analysis and this can be used to determine the reasonable characteristics constants together with the frequency response analysis. The steering transfer function provides useful data in connection with the constants to determine whether the course keeping ability is sufficient or not. Particular attention is given to automatic steering in these tests.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Karasuno, K
• Publication Date: 1972

Media Info

• Pagination: p. 149-170
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 9
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Maneuvering; Prototype tests; Steering
• Old TRIS Terms: Course keeping qualities; Course stability; Steering characteristics
• Subject Areas: Education and Training; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00035124
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM