Patent Number: 6,309,266

Title: Ship propulsion and steering systems

Abstract: A propulsion and steering system for reducing water mounding along and under a bow and hull of a mono-hull ship thereby enhancing displacement of water by the hull and permitting increase of the beam to length ratio of the ship comprising two or more thrust chambers, each of the thrust chambers passing lengthwise through the hull below a waterline of the ship, each of the thrust chambers having an open bow end and an open stern end, and a bow of the ship configured to channel water into the bow ends of the thrust chambers. Preferred configurations of the bow are disclosed. A propeller or turbine thruster is preferably positioned in each of the thrust chambers for propelling water through the thrust chamber. Each of the thrust chambers preferably has one or more outlet ports passing through an outer wall thereof, the outlet ports positioned aft and adjacent the propeller or turbine thruster, and a gate pivotally secured in the thrust chamber aft and adjacent the outlet ports such that the gate can be pivoted to permit selective channeling of propelled water through the outlet ports to thereby contribute to steering and maneuvering the ship. The gate may be sized and configured to substantially seal the thrust chamber.

Inventors: Burke; Peter G. (New Orleans, LA)


International Classification: B63H 25/48 (20060101); B63H 5/14 (20060101); B63H 25/00 (20060101); B63H 5/00 (20060101); B63H 5/16 (20060101); B63H 005/14 ()

Expiration Date: 10/30/2018