I am far from up to date on those icebreakers!
They were built at a gone period when Canada was a world leader in Icebreakers technology.
Now we Canadians are at a laugh in this Arctic passage sovereignty quest.
That they were built expressly to insure safe winter navigation on the St-Lawrence in order to maintain major exports of grains and minerals.
Their designs were truly Canadian in all respects. Designed built and operated mostly from Quebec harbours. German and Milne designed. Built in Vickers Davie and other shipyards.
It is yet another expertise with AVRO and with many other Canadian technology achievements etc that was washed down the drain by a lack of vision and narrow partisan political considerations.
The diesel electric propulsion of those icebreakers in the early stages of the operation were highly problematic. And from discussion I heard then with local subcontractors were costing a lot in repairs and maintenance. Mainly due to condensation in the electric motors. I think that the bombardier engines might be also near the end of their life if they were not replaced entirely.
May be engine parts are now difficult to obtain!
Craked engine support!
See "The Monitor" on this subject two years ago!
Camshaft support cracks are common to all those engines
"I hear the CCGS Pierre Radisson, currently tied up in Quebec City, is pretty much destined for the scrap heap due to the main engines, Alco 251 (Bombardier), being worn out - engine blocks are toast. The Radisson could be consider a sister ship of the Admundsen and Henry Larsen. Any further stalling by the Coast Guard and its governance, to replace these aging assets, is obviously a serious gamble, considering the important role they have just play(ed) in these incidents.
It is mentioned that thanks to our bean-counters in charge personal oars might have as a standard supply for our Coast guard!