What explorer sailed the farthest north?

The explorer who sailed the farthest north was Sir John Franklin. In the 19th century, he led several expeditions to the Arctic, including a notable voyage in 1845 to find the Northwest Passage. Franklin's last expedition aimed to explore the Canadian Arctic and reached latitude 78°43′ N, which remains one of the furthest points north achieved by a sailing expedition at that time. However, his expedition ultimately ended in tragedy, as the ships became trapped in ice and the crew perished.