thunderchief
Senior Member
Oh, when you are wanting to keep those arctic sea lanes open all year, through the winter, size is most certainly an issue.
The 20,000 ton class ice breakers typically can break through 4-5 ft of ice. The monsters the Russians are building can break through 10 ft of ice. That's the difference it makes.
Numbers also clearly play a role because you have to have enough to account for maintenance, breakdowns/damage, etc. and still keep the sea lanes up north open if that is your intent. In that case, clearly one or two will not suffice. But six or seven will.
I was just mentioning that this new Russian LK-60 will be the world's largest icebreaker and comparing it to the largest US Coast Guard icebreaker, the Healy, for reference.
Well , you are probably right about thickness of ice , although 4-5 ft seems enough for Arctic summer and Northwest Passage (north side of North America) . On the other hand , Russians plan to keep open Northern route as long as it possible during the year , therefore they are building very large icebreakers .