Claim: The X Boat, designed by John O. Johnson, a British-born, American boat builder from Minnesota, has a draft of 2.58 ft (0.79 m) with the centerboard extended and can be transported on a trailer.
Evidence: John O. Johnson (January 10, 1875 - February 1963) was a Norwegian-born, American boat builder, early aviator, and inventor in White Bear Lake, Minnesota.