Comment: Lol linking to GWPF, what a joke. 

"If it warming, the ice isn't there."

Whoever said the ice wasn't going to be there? It's not like polar night above the Arctic circle is going to disappear in winter. 

I frequently find ridged first year sea ice with keel depths in excess of 70 feet in the Beaufort/Chukchi. The largest keel I've found was over 90 feet which translates to a ridge that's over 100 feet thick. Icebreakers just can't go through that stuff which is why they try to avoid it in the first place. Heck I've been on the Healy when they've high centered it on a ridge.