You mean the cruise ships that need "2 ice breakers" to get them through the NW passage?

"A day at sea and just as Captain Vorland informed us, indeed we encountered more ice on our journey.  A second ice breaker, the Canadian Coast Guard ship the CCGS Des Groseilliers  was requested to support our own RRS Ernest Shackleton as the our beam required the additional assistance. In a row, and followed by the Bremen, another passenger ship in the area our Captain expertly weaved us through the path provided by the ice breakers."

Chrystal Serenity   (August) 2017