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Mermaid Podded Propulsion Installed

Sedco Express — the first of a new fleet of DPS3 semi-submersible oil and gas drilling exploration rigs for operation in depths to 8,500 ft. — is the first use of the Mermaid podded thruster drive in an offshore application. Mermaid was jointly developed by Kamewa and Cegelec. The system aboard Sedco Express consists of four sets, each comprising synchronous 7 MW AC motor, pod cubicle and slipping unit, large and small pod domes, 12 pulse synchroconvertor and 11 kV supply transformer.Mermaid units reportedly can reduce required generating capacity by up to 17 percent, and cooling requirements by about 25 percent. Mermaid units are designed to save time and money on the repair and maintenance fronts as well, as the units can be fitted and replaced underwater. Shaft seals and propellers can also be changed underwater. For the project, Cegelec was tasked with a wide range of vessel power and control systems, including the overall power system, the AC drilling package, integrated control system and dynamic positioning equipment. The dynamic positioning (DP) system consists of a thruster, power system and operator interfaces, hydro-acoustic position reference system, DGPS system, anemometer, gyro compasses and vertical reference units for automated control of the vessel's position. The DP system provides joystick manual control of all thrusters.




Pod Propulsion History

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Converted Tanker Uikku Delivered By Kvaerner Masa's Helsinki New Shipyard
Cycloconverters Chosen For Washington State Ferries
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Diesel-Electric Icebreaker, Rothelstein, Launched At Kvaerner's Helsinki Yard
Ferry Contract Dispute Settled By Legislature
First ARPA Awards Announced
Gards Inc/s New Gearless Drive: Low Noise With Gear-Like Flexibility
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Holler Signs Contract With Hvide And Aker
Hull Completed On Showboat Branson Belle Louisiana License
Hydro-Propelled Ship Concept Receives Patent
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Mermaid Podded Propulsion Installed
Monohull Orders For Austal
New Rescue Ship Class Fitted With Aquamaster Propulsion
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Peterson Builders Heads Development Of New Urban Commuter Ferry
PROPULSION UPDATE New Generation Of Propulsors Chosen For New Ferries
Siemens, Schottel Team For Podded Drive Product
Trinity Delivers Anchor-Handling/Tug Supply Boat
TRINITY DELIVERS POCAHONTAS, PASSENGER/VEHICLE FERRY, TO VIRGINIA
Trinity Delivers Second Cycloidal Tractor Tug; Launches Casino Boat
Walter Machine Outfits Casino Vessels With Keel Coolers
Westinghouse Marine Division To Supply Sealift Propulsion System Components Submergible Deck To Recover Oil
 
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