Swimmin' With the Fishes STN Atlas, WirtsilS Propulsion "Dolphin" Pod Proves Popular
Jointly developed by STN Atlas Marine Electronics and Wartsila Propulsion, the Dolphin podded system is for vessels designed for high speed and good maneuverability and power requirements extending from 5,000 MW to more than 20.000 MW. With a continuous rotation angle of 360 degrees around the vertical axis, pods ensure optimum maneuverability. The standard drive of the fixed pitch propeller is a six-phase air-cooled synchronous motor, with gears of a conventional thruster being replaced by a low-speed motor directly coupled to the propeller.
A fixed pitch propeller is used with industry-standard lip seals for its propeller shaft. Advantages of the system are elimination of a shaftline, rudder, stern thrusters and reduction gears, as well as enhanced electrical and hydro-dynamic efficiencies, lower fuel consumption and reduced exhaust emissions. Noise and vibration effects are similarly reduced.
STN Atlas recently delivered and installed the first two Dolphin podded propulsion systems aboard Seven Seas Voyager, the new 49,000 gt cruiseliner built by T. Mariotti at its Genoa yard for V. Ships Leisure/Radisson Seas. The vessel commenced sea trials in December 2002 in readiness for delivery in March 2003.
Each Dolphin system provides a power rating of 7,000 MW at 170 rpm.
Other stories from February 2003 issue
- The USCG, MTSA '02 and IMO - The New Faces of Security page: 8
- Littoral Combat Ship Takes One Step Closer to Reality page: 10
- Secure Marine Transportation... Priceless? page: 12
- Three PacifiCat-class Fast Ferries to be Sold page: 18
- The Rising Value of Propulsion Business page: 19
- Navigator of the Seas—A New Course for Profitability page: 24
- Plug and Play page: 28
- Cruise Ship Design Trends Mirror Marine Marketplace page: 31
- Deltamarin Expands to China to Thwart Cruise Downturn page: 34
- Gotar: Keeping Ships Clean From the Inside page: 35
- Coral Princess Debuts With Unique Propulsion System page: 35
- Sick Ships, Project America and a Merger page: 36
- A 360 O page: 38
- Swimmin' With the Fishes STN Atlas, WirtsilS Propulsion "Dolphin" Pod Proves Popular page: 38
- M/S Zuiderdam: Modern With Elegant Taste page: 40
- Construction on 10-Boat, $57-M Contract Commences for Brazil page: 44
- INCAT — A Delicate Balance for the Future page: 46
- NCL Debuts Newest Star with NYC Flair page: 48
- Damen Delivers High Level of Tug Tech page: 49
- A Proven, New Approach for Vessel Insulation page: 50
- The Dilemma: Competent Crews vs. Costs page: 54
- Blue Ridge Officers Complete Safety Training page: 57
- Shipping 2003: Don't Stop Thinking About Tomorrow page: 58
- Cruise Industry Gathers in Miami page: 61