MODEL TESTS OF TWIN SCREW ICEBREAKER HULL FORMS IN ICE MODEL BASIN

To develop a hull form with good ice-breaking performance, a series of model tests was carried out in the ice tank of the Hamburgische Schiffbau-Versuchsanstalt at NKK's request. The results of resistance and ramming tests of four typical hull forms are compared and show the benefit of a cylindrical stem which breaks ice more by bending than crushing. Using the best of the four forms, the effect of ice thickness, ice strength, and the hull-ice friction coefficient were examined. Self-propulsion tests were also carried out and full-scale performance was estimated from model test results. The simulated conditions for model tests in ice and their practical limitations are also discussed.

• Corporate Authors:

  Nippon Steel Corporation

  345 Park Avenue, 41st Floor
  New York, NY  United States  10022
• Authors:
  • Narita, S
  • Ishibashi, Y
• Publication Date: 1980-9

Media Info

• Pagination: p. 64
• Serial:
  • Nippon Steel Technical Report Overseas
  • Issue Number: 29
  • Publisher: Nippon Steel Corporation

Subject/Index Terms

• TRT Terms: Fluid resistance; Hulls; Ice; Icebreakers; Icebreaking; Propulsion; Resistance (Mechanics); Strength of materials; Thickness
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Hull forms; Ice strength; Ice thickness; Model testing; Twin screws
• Subject Areas: Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00331575
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: May 21 1981 12:00AM