ON THE ICE RESISTANCE ENCOUNTERED BY SHIPS OPERATING IN THE CONTINUOUS MODE OF ICEBREAKING

Predictions of ice resistance obtained from models of three ships breaking uniform ice in the continuous mode are compared with full-scale data. Some original data on natural and model ice strength and friction are given and the scale effect of saline model ice due to low strain modulus discussed. Dimensionless terms for breaking, submersion and velocity components of resistance are regression analysed. Causal analysis revealed velocity resistance to result from turning floes against mass and gravity forces. Form coefficients include friction, which is shown to influence resistance considerably. This experimental investigation of fundamentals does not treat practical design.

• Corporate Authors:

  Swedish Academy of Engineering Sciences, Finland

  Lokkikuja 5E, Lauttassaari
  Helsinki,   Finland 
• Authors:
  • Enkvist, E
• Publication Date: 1972

Media Info

• Pagination: 181 p.

Subject/Index Terms

• TRT Terms: Fluid resistance; Hulls; Ice; Icebreaking; Resistance (Mechanics); Skin resistance; Strength of materials
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Ice models; Ice resistance; Ice strength
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00156507
• Record Type: Publication
• Source Agency: United States Coast Guard
• Report/Paper Numbers: No. 24
• Files: TRIS
• Created Date: Jun 17 1977 12:00AM