SIMULATION PROGRAM FOR MANEUVERABILITY OF SHIPS AND ITS APPLICATION

In designing a new ship correct predictions of prospective maneuverability are most indispensable. Especially in the case of V.L.C.C. prior clarification of the effects of hull and rudder configurations on maneuverability is a prerequisite for determining the principal dimensions. In order to meet these requirements, a simulation program for a digital computer was developed by the authors. By solving the equations of horizontal plane motion with hydrodynamic derivatives estimated from input data on hull, rudder and propeller, the computer program makes predictions of nonlinear ship motion which initiates various rudder actions. It is, of course, possible to use those derivatives obtained from model tests, in order to improve the accuracy of predictions. This program can simulate the performance of such standard maneuvers as turning test, zig-zag (Z) tests including modified Z maneuver and new course test. It can also simulate the characteristics of course keeping and course changing by autopilot control in a seaway, by adding a pseudo random noise signal to yaw moment and sway forces, corresponding to such sea disturbances as wind and waves. With the aid of this program it is now possible to predict the maneuverability of a ship with high accuracy, studying the correlation between model and actual ship in maneuverability.

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  • Corporate Authors:

    Ishikawajima-Harima Heavy Industries Co., Ltd.

    2-16, Toyosu 3 Chome, Koto-Ku
    Tokyo 135,   Japan 
  • Authors:
    • Mori, M
    • TANAKA, M
  • Publication Date: 1973-9

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Filing Info

  • Accession Number: 00084485
  • Record Type: Publication
  • Source Agency: Japan Shipbuilding Industry Foundation Library
  • Files: TRIS
  • Created Date: May 7 1975 12:00AM