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Siemens Podded Electric Drive Provides Operational Advantages

Siemens AB Marine Engineering has developed a new propulsion system within the power range of 5 to 30 MW per unit, which it claims is proven to offer a better efficiency level than conventional propellers, in addition to improved maneuverability, increased safety and improved handling. The Siemens Schottel Propulsor (SSP) is especially suited to cruise vessels, large ferries and passenger vessels, and cargo vessels including chemical tankers, icegoing vessels, large offshore structures and navy vessels.

Siemens reports that with this system, energy savings of more than 10 percent are possible due to the efficiency improvements of the combination of Schottel Twin propellers and the newly developed Siemens permanent excited synchronous motor, allowing maximum efficiency in transmission of electrical energy at minimum installation space. This statistic is based on tank tests and model simulations for a 70,000-gt cruise liner.

SSP Machinery The 14-MW Siemens Schottel Propulsor consists of a streamlined lower housing made from shipbuilding steel and cast steel. Two fins are welded to the lower housing to gain rotational energy from the forward propeller.

The lower housing of the unit is designed in such a way that it allows a safe underwater mounting of the lower housing so that no drydocking is necessary for dismantling of the lower unit.

The upper part consists of a cone type support structure flanged to the ship's structure and made fromTwo propellers and the propeller covers are fitted to the lower housing.

The lower housing is made up of: propeller shaft with water-lubricated sealings and pneumatic pressure safety device; bearings as roller bearing with 200,000-hr. lifetime; brake to block propeller; propulsion motor; bilge system; and alarm and monitoring sensors for motor, bearings and sealing systems. Installed in the upper housing are: the cable lead allowing 410 degree or optional unlimited azimuth steering; pneumatic compressors for sealing actuation; electric/hydraulic azimuth steering system; local indicators; and bilge pumps shipbuilding steel.




Shipbuilding / Vessel Construction History

1995 Sname Annual Meetinng & International Maritime Exposition
American Shipbuilding Issociation
Appleton Marine, Inc.
BIW Sale Invites Industry Speculation
BUYING INTO THE FUTURE
Canadian Technology Takes (enter Stage
Changes at Malta Drydocks
CVN-76: BEYOND VIRGINIA
DEFENSE CONVERSION ACT
Diesel Power
Europeans Hang On With Technology
Evergreen To Build 10 New Confainerships In Japan
German Marine Equipment Manufacturers As Driving Forte In Technology And Cost Efficiency
Gladding-Hearn Builds Whale-Watching Cat
Increasing Orders Put South Korea Ahead Of The Competition
Industry Leaders Meet To Discuss Maritime Policy, Commercialization
Intergraph Expands Capabilities For Ship Design And Production CAD/CAM Systems
Kockums To Launch New Generation Of Shipbuilding Systems
McDermott: Blazing A Unique Trail Towards International Business
NNS To Develop Construction, Repair Facility In UAE
Norwegicm Innovation Sburs Commercial Success
PHOENIX WORLD CITY Landmark Passenger Ship Intends To Boost U.S. Maritime Industry Into International Commercial Competition
Power Alliance Wins DARPA Contract
Pragmatic Research
Premier Steels Helping Shipyards Cut Casts
SCA: OECD Talks Fail On Jones Act, European Export Credit Issues
South Korean Curbs On Shipbuilding To End Amid Controversy
Strategic Value Added: Navy-Industry Cooperation for the Future
Study: U.S. Yards Must Focus On Technological, logistical Improvements To Be Competitive Internationally
That's The Way It Is
 
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