DEVELOPMENT OF A CRAFT CAPABLE OF PREPARING AN ICE FREE CHANNEL THROUGH SOLID ICE COVER

A major problem associated with using conventional icebreakers to clear channels is that, although they break up the ice cover, they do not leave an ice free channel. As a consequence, many ships find it difficult to transit the channel left by an icebreaker even when the ship is following close astern. The U.S. Coast Guard embarked on a development program in 1970 to increase the channel clearing ability of icebreakers and thereby increase their capacity to further extend the navigation season. One concept which looks particularly promising that has evolved from that program is referred to as the Mechanical Ice Cutter, or MIC. The requirements for the MIC were to clear a fifty- foot wide channel in fresh water ice two foot thick at speeds of 4 to 5 knots. The emphasis throughout the development program has been on clearing the channel so that it is free of ice. This paper provides a review of the progress made during three years of effort on the development of this craft.

Media Info

  • Pagination: p. 138-161

Subject/Index Terms

Filing Info

  • Accession Number: 00095018
  • Record Type: Publication
  • Source Agency: Arctic Institute of North America
  • Files: TRIS
  • Created Date: May 19 1975 12:00AM