초록 ▼

A removable retractable externally mountable dynamic positioning self contained diesel hydraulic thruster system for a floating semi-submersible vessel having a hull with a ballasted waterline, a first pontoon integral with the hull and a second pontoon integral with the hull. The hull supports a de

A removable retractable externally mountable dynamic positioning self contained diesel hydraulic thruster system for a floating semi-submersible vessel having a hull with a ballasted waterline, a first pontoon integral with the hull and a second pontoon integral with the hull. The hull supports a deck, wherein the system comprises: at least a pair of azimuthing thrusters, wherein at least one azimuthing thruster is removably mounted to a pontoon of a semi-submersible vessel.

대표청구항 ▼

What is claimed is: 1. A modular removable externally mountable diesel hydraulic thruster system for dynamic positioning of a floating semi-submersible vessel with a ballasted waterline comprising at least one submerged pontoon, and wherein each submerged pontoon is provided with at least one vertic

What is claimed is: 1. A modular removable externally mountable diesel hydraulic thruster system for dynamic positioning of a floating semi-submersible vessel with a ballasted waterline comprising at least one submerged pontoon, and wherein each submerged pontoon is provided with at least one vertical column integral with a top of the at least one submerged pontoon, and wherein each vertical column supports a deck above the ballasted waterline, and wherein the modular removable externally mountable diesel hydraulic thruster system comprises:a. at least a pair of azimuthing thrusters wherein each azimuthing thruster is removably mounted to the at least one submerged pontoon of the floating semi-submersible vessel, and wherein each azimuthing thruster generates a variable thrust and each azimuthing thruster comprises:1. a skid removably secured to the top portion of the submerged pontoon below the ballasted waterline;2. an upper thruster housing removably connected to the skid, containing a slewing bearing with at least one hydraulic motor driven slewing drive, at least one electric steering angle feedback sensor for indicating the steering angle of the azimuthing thruster and a multiport hydraulic swivel assembly;3. a tube moveably connected to the upper thruster housing and removable connected on the other end to a hydraulic pod with nozzle;4. a hydraulic motor inside the hydraulic pod with a rotating propeller drive shaft whereby a fixed pitch propeller is removably mounted to a propeller drive shaft that engages the propeller drive shaft; and5. a bundle of thruster hydraulic hose assemblies connected to at least one of the hydraulic motors on one end to the multiport hydraulic assembly on the other end;b. at least a pair of diesel hydraulic power units removably secured to the deck, wherein each diesel hydraulic power unit engages one of the azimuthing thrusters, wherein each diesel hydraulic power unit comprises:1. a power unit housing;2. a diesel engine driven hydraulic pump package within the power unit housing;3. at least one hydraulic fluid reservoir;4. a fuel tank connected to the diesel engine;5. a cooling system;6. a starting system connected to the diesel engine;7. an exhaust system connected to the diesel engine;8. a bundle of hydraulic hose assemblies, wherein at least one hydraulic hose is connected to the hydraulic motor within the hydraulic pod; and9. a control system communicating with the azimuthing thruster;c. a dynamic positioning system connected to the diesel hydraulic power unit; andd. at least two position reference sensors and at least two environmental reference sensors connected to the dynamic positioning system.