What are the four ships sought a passage along a southern .?

The four ships that sought a passage along the southern route are often referred to in the context of the search for the Northwest Passage, specifically during the 16th and 17th centuries. These ships include the "Discovery," "Resolution," "Erebus," and "Terror," which were part of various expeditions aimed at finding a navigable route through the Arctic. Their journeys played a significant role in the exploration of the polar regions and the quest for new trade routes.