Patent ID: 7641526
Filing Date: 2010-01-05
Classification: B63B,B63H

Abstract:
1. A floating marine vessel comprising: a. a hull having a hull bottom; b. at least one well in the hull oriented toward a sea floor; c. a movable and removable canister disposed in each well; d. at least two rack and pinion drives connected to each movable and removable canister, disposed in the well for moving each movable and removable canister between a deployed position and a retracted position; e. an electric motor disposed within each movable and removable canister, each electric motor connected to a rotatable connecting shaft; f. a rotatable thruster input shaft with a rotatable thruster input shaft axis connected to each rotatable connecting shaft, removably connected within each movable and removable canister; g. an azimuthing thruster removably connected to each movable and removable canister comprising: h. a lubricating tank at atmospheric pressure in each movable and removable canister; and i. an atmospheric pressure lubricating fluid disposed within each lubricating tank, further wherein each lubricating tank supplies atmospheric pressure lubricating fluid to each thruster and bearings.