Ice passport of a river icebreaker: winterization and reconstruction

Abstract

The work develops a number of author's publications with an overview of the experience of operating icebreakers of project 1191 in ice conditions of inland and coastal sea waterways. This publication is devoted to the generalization of data from field observations and tests of the operability of ship systems, devices, deck mechanisms, equipment, shipboard spaces under prolonged exposure to negative atmospheric temperatures. It is noted that the icebreakers of the Kapitan Evdokimov type in the design did not demonstrate their reliable adaptability to long-term operation in winter.

An overview of the main stages of reconstruction of the studied project to improve its operational performances is also performed. It is shown that the reconstruction measures of the initial stage of operation in order to improve the ice performances of the icebreaker cannot be considered scientifically justified and completed. At the same time, the optimization of the combination of its ice and navigation performances has not been achieved. Modernization measures of the last decade of operation are able to maintain the ice performances of the vessel, but their resource consumption must be justified.