John A Konrad kindly allowed me to post at gcaptain. The Sinking of the Alaska Ranger - Fishing Master vs Captain
Meanwhile I've been digging though some old photos.
Here is the Terry Fox, at night in the Chukchi Sea. This was the Fox's maiden voyage in 1983.
The Terry Fox again, with a tow line running across the ice to the NOAA Ship Surveryor, The ice was 8/8ths, 4-6 feet thick with 20 ft pressure ridges.
This is the view from the wheel house, crossing the Gulf of Alaska on a SeaLand (now Horizon Line) D-7 Container ship. These ships were built for Alaskan water with ice-strengthened hulls.