World laughs and mocks liberal global warming alarmists whose ship became caught in ice.
The USCGC Polar Star has been dispatched to Antarctica in order to attempt the rescue of a Russian research ship that got trapped in the ice, as well as a Chinese icebreaker that got trapped while trying to free the Russian ship. The Polar Star is based out of Washington State, though was located in Australia at the time it was called up for this rescue operation.
Polar Star has sufficient hull strength to absorb the high-powered ice breaking common to her operations. The shell plating and associated internal support structure are fabricated from steel that has especially good low-temperature strength. The portion of the hull designed to break ice is 1-3/4 inches (45 mm) thick in the bow and stern sections, and 1-1/4 inches (32 mm) thick amidships. The hull strength is produced almost entirely from the massive internal support structure. Polar Star’s hull shape is designed to maximize icebreaking by efficiently combining the forces of the ship’s forward motion, the downward pull of gravity on the bow, and the upward push of the inherent buoyancy of the stern. The curved bow allows Polar Star to ride up on the ice, using the ship’s weight to break the ice.
With such a sturdy hull and high power to back it up, the 13,000-ton (13,200 metric ton) Polar Star is able to break through ice up to 21 feet (6.4 m) thick by backing and ramming and steam continuously through 6 feet (1.8 m) of ice at 3 knots (6 km/h).