CALCULATION OF MANEUVERABILITY OF FAST SURFACE SHIPS

Existing methods of calculations, allow us to determine the maneuverability parameters for ships with relative speeds between Fr = 0.25 - 0.30. At the same time it is well known that the steady turning radius is almost doubled with a change of Fr from 0.2 to 0.8. This phenomenon can be explained primarily by the change of form of the submerged central plane which occurs due to the change of ship position. It is also a result of the additional lateral forces acting on the hull and rudder. These forces appear because of the non-symmetrical wave patterns with relation to the ships centerplane. A method which allows us to account for the trim is given by Pershets, and the change of lateral forces was investigated by Fedyayevskiye. Experimental results, however, indicate that the influence of speed is stronger than that obtained using the data presented in the above mentioned references. New methods for calculating the coefficients of lateral force and moment acting on a turning ship are presented.

• Supplemental Notes:
  • Translated by Michail Aleksandrov and Peter Fitzgerald
• Corporate Authors:

  University of Michigan, Ann Arbor

  Department of Naval Architects and Marine Engineers
  Ann Arbor, MI  United States  48109
• Authors:
  • Sobolev, G V
• Publication Date: 1970-2

Media Info

• Features: Figures; References;
• Pagination: 17 p.
• Serial:
  • Issue Number: 060

Subject/Index Terms

• TRT Terms: Force; Hulls; Maneuverability; Rudders; Stability (Mechanics); Turning traffic
• Old TRIS Terms: Hull forces; Rudder forces; Turning characteristics
• Subject Areas: Freight Transportation; Marine Transportation; Terminals and Facilities; Vehicles and Equipment;

Filing Info

• Accession Number: 00007031
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 25 1973 12:00AM