Harsh ice conditions dangerous even to nuclear fleet.
25 Mar 2018 – “US Nuclear Submarine Gets Stuck In Arctic Ice, “Deterring The Russians,” reads the headline.
According to fort-russ.com, the U.S. nuclear submarine USS Connecticut was unable to rise to the surface in the Arctic due to the thickness of the ice.
Another submarine missile carrier, the USS Hartford, managed to break through the ice, but received significant damage.
A Google search reveals that both vessels are Los Angeles-class nuclear-powered submarines providing the US Navy with a lethal combination of stealth and firepower. Their primary mission is to hunt and kill enemy ships and submarines.
Thanks to Alexey Parkhomenko for these links