ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,104, issued on March 25, was assigned to Mary A. Corcoran (Hyannis, Mass.).
"Watercraft with battery ballast system" was invented by John F. Corcoran (Hyannis, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A watercraft comprising a battery ballast system is shown and described. The battery ballast system comprises a plurality of carriage assemblies, each comprising a plurality of tiers along the watercraft's height axis, and each being movable along the watercraft's length axis. The batteries sit on movable supports that are movable along the watercraft's width axis. Each tier is loaded to less than 50 percent with batteries and battery supp...