DIRECTIONAL STABILITY OF THE WYTM ICE BREAKING TUGBOAT AS REPRESENTED BY MODEL 5336

The results of spiral maneuvers conducted with Model 5336, representing a preliminary design of the WYTM Ice Breaking Tugboat, indicate that the ship, when appended with a 61 or 73 square foot rudder, will be directionally stable at ahead speeds of 5 knots and above. The results further indicate that when appended with a 49 square foot rudder, the ship will only be marginally stable at a ship speed of 5 knots. Regardless of which of the three rudders is used, the neutral rudder angle will be between 0.6 and 1.0 degrees right.

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Ship Performance Department
  Bethesda, MD  United States  20084
• Authors:
  • Rossignol, G A
• Publication Date: 1975-4

Media Info

• Pagination: 13 p.

Subject/Index Terms

• TRT Terms: Directional stability; Icebreakers; Performance; Rudders; Tugboats; Vehicle design
• Uncontrolled Terms: Ship design
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00098789
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-223-17 Final Rpt.
• Files: TRIS
• Created Date: Aug 13 1975 12:00AM