Page 39: of Maritime Reporter Magazine (February 2003)
Podded Propulsion similar costs to conventional solutions, but with more flexibility and safety ben- efits.
Rolls-Royce's new NVC-Design con- cept is an up-to-date product tanker design in the 3,000 to 15,000 dwt range, powered by a pair of medium speed engines directly coupled to two Ulstein
Aquamaster pulling azimuth thrusters, known as Azipulls. The unit's first work in service will be aboard two new
Fjellstrand FerryCat design ferries, which have been ordered by the Istanbul
Seabus Company in Turkey and are scheduled for delivery in early 2004.
Each ferry will feature four 1,500 kW
Azipulls, one on each corner of the ves- sel.
Azipull thrusters use proven gear transmission technology and a pulling controllable pitch propeller. The leg and lower gear housing are of a streamlined section and incorporate a fin, providing some rudder effect and raising efficiency by recovering much of the swirl energy in the propeller slipstream which is oth- erwise lost. Azipull thrusters have also been ordered as main propulsion units in an offshore service vessel.
Together Siemens Marine Solutions and Schottel developed and provide the
Siemens-Schottel Propulsor system (SSP). The two companies re-affirmed their partnership just last summer, and announced that they will be adding sys- tems with outputs of less than five MW to their present range, making the SSP available for smaller vessels and for the platforms and supply vessels of the off- shore industry.
Dubbed Schottel Electric Propulsor (SEP), the system is already marketed by Schottel and will be equipped with
Siemens permanent-magnet motors.
These smaller pod propulsion systems are especially suitable for vessels that do not need high power ratings and for the platforms and supply vessels of the off- shore industry where good maneuver- ability is crucial.
SSP pod propulsion systems refer- ences include the chemical products tanker Prospero operated by Swedish owners AB Donsotank, since October
For more information on the companies referenced in this story, please circle the appropriate number on the Reader
Service Card in this edition.
Kvaerner Masa-Yards 13
SSPA Sweden 17
STN Atlas ..18 2000, and the ferry Nils Holgersson.
To develop a new marine propulsion system based on the pod concept,
Alstom joined with Rolls-Royce — a world leader in marine propulsion.
The joint developmental effort com- bined Rolls-Royce hydrodynamic know- how with Alstom's expertise in marine engineering, electrical propulsion, propulsion motors and generators, and led to the introduction of Mermaid, a unique design which uses a minimum of mechanical parts to optimize available vessel space, ensure greater reliability, and reduce mounting time.
The manufacturer says that optimiza- tion of the shape, positioning, and angle of Mermaid in relation to the ship-allows an increase in efficiency of up to 15 per- cent versus conventional propulsion solutions.
Power, reliability and control
The gearbox program covers powers from 10 to 10,000hp with many PTO options tailored to your needs.
And with the security of worldwide support from the ZF Group, peace of mind is guaranteed.
ZFI Marine Gulf Coast
Tel: 504 443-0501
Fax: 504 443-0504
Email: firstname.lastname@example.org www.ZF-Marine.com
ZF offers heavy duty products, finely engineered to meet these demands.
Marine Propulsion Systems
Unique Emergency Escape
Path Lighting System "Transit" was developed as an escape path lighting system for Oil and Gas platforms or for any hazardous areas.
A customised laser lights a side-emitting fiber optic rope up to 100 yards without any loss of illumination.
As there is no electricity, being only laser light in the fiber rope, this makes it completely safe for hazardous areas or even under water.
The system contains a UPS (Uninterruptible
Power Supply), self test and a sophisticated battery management system that in the event of primary power failure within one millisec- ond up to 3 hours battery back up is available.
Advantages of Transit are:
No live electricity in the fiber rope,
Lightweight, Low Power Consumption, Self
Testing, 3 hour battery backup, Ease of instal- lation, maintenance free fiber optic rope.
Circle 274 on Reader Service Card
IntensLLfH3 International Ltd.
Enquiries: email@example.com www.intenslite.com
Circle 283 on Reader Service Card 39