See why crab fisherman suffer from the highest fatality rate of any profession as they battle the cold as well as dangerous waves off helicopter rescue on the Bering Sea as an ice pack slowly crushes a fishing vessel. Hear the harrowing account of passengers aboard the ill-fated Estonia Ferry. And learn just how merciless the wintry seas can be through the tragic story and loss of a Penlee lifeboat off the coast of the British Isles.