Russia’s Ministry of Transport has declared changes concerning ice navigation criteria for the Northern Sea Route. These changes will apply from May 2019.
Currently, the typification of ice conditions is standard to seven crucial areas of the NSR. Typically, the averaged value of ice conditions concerning cohesive, thin ice within a large area does not allow vessels to navigate through that area. Yet, new zones with lower ice-class requirements are expected to optimize the placement of...
https://safety4sea.com/russia-changes-northern-sea-route-ice-class-requirements/