Travel to the north pole aboard the most powerful, energy efficient and highest ice class polar expedition vessel in the world. Agulhas ii is one of the few vessels rated pc 5 or higher For ships to navigate polar regions, they must have what is called an ice rating
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As you'd expect, there are several standards
American, russian, swedish, german etc
So be careful to compare like classes when assessing a ship's ability One must also bear in mind that an icebreaker is a special ship design altogether As the name suggests, icebreakers are designed to smash through solid.