At 420 feet, the Coast Guard Cutter Healy is the largest ship in the Coast Guard fleet. It was launched in 2000, has a beam of 82 feet and a draft of 29’ 3”, and a crew of 19 officers and 54 enlisted men and women. More important, it is a Polar-class icebreaker, designed to break 4½ feet of ice continuously at 3 knots and to operate in temperatures as low as minus 50 degrees. 
Earlier this fall, the Healy reached the North Pole. Here’s the posting from its Facebook page, with a wonderful video below:
“Some of our U.S. Coast Guard cutter crews are lucky to get swim calls over the Mariana Trench, and some crews have fish calls, but how great is getting liberty at the North Pole?!?
“Earlier this month, the U.S. Coast Guard Cutter Healy reached the North Pole, and the crew took to the ice to celebrate the milestone of reaching 90 degrees north!
“Some crew members and scientists participated in the Float Your Boat classroom outreach program by decorating wooden boats with integrated buoy sensors and arranging them in a ’90 N’ on the ice to celebrate reaching the North Pole. Float Your Boat is a project for community members and students to learn more about the Arctic Ocean, including its circulation, its sea-ice cover, and how it’s changing.
The boats deployed bye the Healy can be followed here: http://floatboat.org/follow-your-boat”
See the video of the Healy’s crew at the North Pole here:
https://www.facebook.com/watch?v=1072283556803084
