As daft as it is, I found this quote from the wikipedia entry on the USS Connecticut rather amusing:
"In April 2003, Connecticut surfaced through the Arctic ice at the University of Washington's Applied Physics Laboratory Ice Station (APLIS). While there, she came under attack by a polar bear, which gnawed on her rudder for a while before disengaging. Connecticut was able to complete her mission and return to base under her own power."
And then there's an image of the bear going at the rudder with the caption "Connecticut is inedible"

 

polar bears kick ass!

 

What else would you call a Seawolf class sub? I suppose OFF TOPIC would have been better.