Which explorers made 2 voyages to find a northwest passage?

Two notable explorers who made multiple attempts to find a northwest passage were John Cabot and Martin Waldseemüller. Cabot, an Italian explorer sailing under the English flag, made his first voyage in 1497 and returned in 1498 for a second attempt. Waldseemüller, a German cartographer, is less known for actual voyages but contributed significantly to the mapping of potential routes, influencing subsequent explorers. Other prominent figures, such as Henry Hudson, also sought the northwest passage in multiple expeditions.