US 12,258,104 B2
Watercraft with battery ballast system
John F. Corcoran, Hyannis, MA (US)
Assigned to Mary A. Corcoran, Hyannis, MA (US); and Ellen T. Corcoran, Hyannis, MA (US)
Filed by John F. Corcoran, Hyannis, MA (US)
Filed on Jan. 3, 2023, as Appl. No. 18/092,602.
Application 18/092,602 is a continuation of application No. 17/211,069, filed on Mar. 24, 2021, granted, now 11,572,140.
Claims priority of provisional application 63/001,305, filed on Mar. 28, 2020.
Prior Publication US 2023/0150619 A1, May 18, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B63B 43/08 (2006.01); B63H 21/17 (2006.01); B63H 23/26 (2006.01)
CPC B63B 43/08 (2013.01) [B63H 21/17 (2013.01); B63H 23/26 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A watercraft, comprising:
a hull;
a propeller operable to propel the watercraft through a body of water;
an air motor operative to rotate the propeller; and
an air compressor operable to supply compressed air to the air motor, wherein the watercraft does not include a fossil fuel engine or a fossil fuel tanks; and
ballast comprising a plurality of batteries, wherein the batteries in the plurality of batteries are selectively positionable along at least one of a watercraft length axis and along a watercraft width axis.