Summary of Working Paper No. 21-1995
III.11.1. New Concepts in Removing Ice
By Alexander Ierusalimsky and Yury Glebko, Central Marine Research & Design
Institute, St. Petersburg, Russia.
The realization of the Project New Concepts in Removing Ice should enable
determination of the efficiency of various concepts of ice-breaking and means to
augment icebreaking capability, as well as elaborate recommendations on their use
in icebreakers and commercial ships designed for Arctic navigation depending
ontheir purpose, area and season of navigation.
In the process of work the following was achieved:
Based on the patent and information search done, more than 100 engineering
solutions were chosen and grouped by purpose and operating principle. That enabled
suggesting the classification of new concepts of breaking the ice and clearing
the created channel for shipping. All the concepts chosen were also subdivided
according to the degree of their realization.
Based on the above objectives, a patent and information search was done. Main
concepts were compared with one another and with traditional means of
ice-breaking. Auxiliary technical means improving the efficiency of icebreaking with the
ship's hull were also covered by the patent and information search.
While selecting inventions and other publications, concepts were taken into
account which may be used for navigation and which may be structurally
implemented on icebreakers and ice transport ships.
A large group of patents and ideas now available for the protection of fixed
offshore drilling units in ice conditions, for ice clearing of parts and other
hydraulic-engineering structures, etc. were also studied, but only some few
engineering solutions, the application of which is theoretically possible on board
ships, were chosen for the purpose of analysis.
One of the important objectives of the survey and classification of new means
of ice destruction is to prevent future efforts directed toward reinventing
already known methods and constructions.
collected and summed up information on new means of ice-breaking contained in
patents, inventions, papers, monographs, scientific works, published in Russia;
new engineering solutions in terms of their purpose and operating principle
classified;
fundamental differences between the main concepts of ice-breaking analyzed;
degree of practical use of different engineering solutions ascertained.