METHODS TO IMPROVE GREAT LAKES BULK CARRIER PERFORMANCE IN MUSH ICE FIELDS AND CLOGGED CHANNELS. VOLUME I

The objective of this research program was to determine methods to improve the performance of Great Lakes bulk carriers in broken ice fields during the winter and spring seasons. Phase I was directed toward the development of realistic models of the actual ice conditions prevailing in the bottleneck areas and to the examination of the behavior of a model of an existing bulk carrier under these conditions. Phase 2 was directed at developing methods for reducing bulk carrier resistance in mush ice and clogged channels employing air bubbler systems, waterjet systems, detachable icebreaking type bow, detachable bow with two propellers, and detachable bow of special design. The results are presented in terms of full scale ship performance.

• Supplemental Notes:
  • See also Volume 2, COM-73-10939; Repr PC, $5.45, Microfiche, $1.45. Paper copy also available from NTIS $10.00/set of 2 volumes as COM-73-10937-SET.
• Corporate Authors:

  Arctec, Incorporated

  Wilde Lake Village Green, Suite 255
  Columbia, MD  United States  21044
• Authors:
  • Voelker, R P
  • Levine, G H
• Publication Date: 1972-4-28

Media Info

• Pagination: 118 p.

Subject/Index Terms

• TRT Terms: Bubbles; Bulk cargo; Bulk carriers; Cargo ships; Deicing; Evaluation; Flow; Hulls; Ice; Ice formations; Ice navigation; Ice phenomena; Icebreakers; Lubrication; Maneuvering; Trafficability; Water transportation; Waterjets
• Identifier Terms: U.S. Maritime Administration
• Uncontrolled Terms: Ice breakup; Model tests; Ship hulls
• Geographic Terms: Great Lakes
• Old TRIS Terms: Air bubbling systems; Air coating systems; Air lubrication; Ice fields; Ma; Mush ice; Waterjet flow
• Subject Areas: Hydraulics and Hydrology; Maintenance and Preservation; Marine Transportation;

Filing Info

• Accession Number: 00050842
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TR-00371-Vol-1 Final Rpt
• Contract Numbers: MA-1-35554
• Files: TRIS
• Created Date: Jan 31 1974 12:00AM