PLYMOUTH, England—This year marks the 400th anniversary of the Mayflower, the ship that transported more than 100 brave souls across the Atlantic Ocean to Cape Cod, MA. To celebrate the historic event, an autonomous research vessel will retrace the voyage in the spring.

Avid sportsmen, Mark Castlow and Jimbo Meador grew up on the water—Castlow on Florida’s east coast and Meador in Alabama.