What is the Polaris as discussed in the book, In the Kingdom of Ice?

The Polaris, lead by Captain Charles Hall, was a failed expedition to the North Pole. The Polaris ran aground and got stuck in the ice. The men placed the blame on Hall and it was mutiny on the Polaris. The men, who were later rescued, poisoned Hall with arsenic. Hall was the only casualty on the Polaris expedition.