ICE LOADS AND SHIP RESPONSE TO ICE

In two previous Ship Structure Commmittee reports, the assessment of various rules pertaining to the design of ice-strengthened vessels was undertaken. Empirical recommendations were made for vessel scantlings, but the need for full-scale data was recognized. This report presents the results of obtaining full-scale local ice pressure loads near the bow of the U.S. Coast Guard icebreaker POLAR SEA as a step toward the development of local ice load criteria for icebreaking ships. The data was obtained by instrumenting a bow panel of approximately 100 sq. ft. to measure ice pressures by measuring compressive strains in the webs of transverse frames. Only events over a preset threshold strain were recorded, and there were approximately 1400 such recorded events on two deployments--one to the Beaufort Sea in September-October 1982 recording summer multiyear ice impacts, and one to the Chukchi Sea in March-April 1983 recording both first year and multiyear winter ice impacts.

• Supplemental Notes:
  • Report; A Ship Structure Committee Report
• Corporate Authors:

  Arctec, Incorporated

  9104 Red Branch Road
  Columbia, MD  United States  21045

  Arctec Canada Limited

  311 Legett Drive, Kanata
  Ottawa, Ontario  Canada  K2K I28

  Maritime Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Transport Canada

  Transportation Development Centre, 800 Rene-Levesque Boulevard West, Suite 600
  Montreal, Quebec  Canada  H3B 2X1
• Authors:
  • St John, J W
  • Daley, C
  • Blount, H
• Publication Date: 1990

Media Info

• Features: References;
• Pagination: Various p.

Subject/Index Terms

• TRT Terms: Design; Hulls; Ice; Instrumentation; Loads; Measurement; Ship motion
• Uncontrolled Terms: Design criteria
• Old TRIS Terms: Hull instrumentation; Ice loads; Ship response
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00659889
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Report/Paper Numbers: SSC-329, SR-1291
• Contract Numbers: MA-81-SAC-10023
• Files: TRIS, USDOT
• Created Date: Jul 21 1994 12:00AM