The team journeys south to thoroughly map the Massau, West Melanesian, and New Britain Trenches followed by a trip to Cairns, Australia to pick up the submersible Limiting Factor — where it had been undergoing refit. Afterwards, the sub will attempt to make the first crewed dives in history to the deepest points of the San Cristobal, Santa Cruz, New Hebrides and Kermadec Trenches. The Kermadec is the last of the world’s four 10,000 meter trenches that the team have not yet dived.