Hamish X and the Cheese Pirates by Sean Cullen

From chapters.ca:
Meet Hamish X - orphan, enigma, and enemy to pirates everywhere. The mysterious Hamish X is the scourge of the Orphan Disposal Agency — Agents Candy and Sweet can’t seem to find a facility that can hold him. After arriving at the Windcity Orphanage, where the children are forced to earn their keep making stinky blue cheese, Hamish is soon planning his escape along with new friends Parveen and Mimi. But his plans are put on hold when the factory is suddenly attacked by a fierce gang of pirates, led by the dreaded Cheesebeard of Snow Monkey Island. In order to save the other orphans, Hamish, Mimi, and Parveen must embark upon an epic adventure across the Arctic and take on the cheese-obsessed pirates by themselves.