In the Baltic Sea, that’s not even a recognized ice class (it would be classified as “ice class 2” or “steel hull and independent propulsion”) together with other ships that are not barges or wooden sailing vessels.
Yes it is the lowest Ice Class, but what is the requirement to traverse the North West Passage in Oct.?
That would admit failure.
Ice class 1D would be equivalent to “Type D” which is not allowed to transit the NWP at any time of the year (as any route would take it through one or more of Zones 1 to 6).
Page doesn’t want to open, but I take your word for it. Thanks.