Azipull Technology Debuts on Offshore Vessels

Wednesday, April 02, 2003

Havila is set to retrofit its supply vessel Havila Tampen with a pair of Ulstein Aquamaster Azipull azimuth thrusters for main propulsion, replacing conventional azimuth thrusters. The Azipull azimuth thruster from Rolls-Royce uses a pulling propeller ahead of the streamlined leg and lower gear house, and a simple gear drive transmission. The units for Havila will be the largest built to date: type AZP120 designed for inputs up to 3,000 kW, but in this case each transmitting 2,500 kW.

"We have chosen to pioneer this new propulsor in offshore service because we believe that it will give us significant fuel savings — in the region of seven to eight percent compared with traditional thrusters — through its improved hydrodynamic design, with a minimum of noise and vibration," said Robert Welsvik, managing director of Havila.

Havila Tampen is a UT-Design type UT745E boat that was delivered by Kleven Verft in September 2002. The vessel uses diesel-electric propulsion and the two Azipull units under the stern will be powered by electric motors in the hull. Conventional thrusters from Rolls-Royce were installed to get Havila Tampen into service. However, the owner had decided in principle to change to Azipull units as soon as these were released for offshore service, and this has now been confirmed. The changeover is designed to be quite simple. The existing propulsion motors and the input gear units in the hull can remain in place, and only the outboard parts of the main thrusters need to be exchanged.

The first Ulstein Aquamaster Azipull thrusters to enter service will be four AZP085 units propelling the first innovative new Fjellstrand FerryCat catamaran double-ended ferry, now under construction, which is scheduled to start operating on a route in the Stavanger region of Norway this summer. The thrusters have been shipped, and Rolls-Royce has orders for another two shipsets (eight units) for two more FerryCats to be built for operation in Turkish waters.

Maritime Reporter February 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Barril Appointed COO of SBM Offshore

SBM Offshore is pleased to announce the appointment of Philippe Barril as Chief Operating Officer (COO) effective March 1, 2015.  Philippe's appointment as a

Zamakona, Finnish GS-Hydro Ink Deal

The presentation ceremony of the Finnish multinational leader in water services GS-Hydro, new partner of Zamakona Yards in Canarias was held yesterday (January 29th at 7 p.

Naval EXPO Coming to Washington

For the first time ever, the general public will be admitted free to the Naval Future Force Science and Technology EXPO general exhibit hall Feb. 4-5 where they

Marine Propulsion

Wärtsilä to Power LNG-fueled RoPax Ferry

A ferry being built for Sweden’s Rederi AB Gotland will be fueled by LNG, featuring a Wärtsilä integrated solution which includes a complete LNG powered propulsion- and fuel storage and supply system,

First Container for LNG Hybrid Barge

The HUMMEL (bumblebee) LNG Hybrid Barge will enable Becker Marine Systems to supply low-emission power to cruise ships lying at port in Hamburg. The first container

IntelliJet: Cleantech Propulsion for High Speed Applicatios

IntelliJet Marine, Inc. will present a paper on propulsion and computer simulation for sustainable high speed boats and ships at ASNE Day 2015.   Jeff Jordan

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Pipelines Port Authority Salvage Ship Electronics Ship Repair
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1429 sec (7 req/sec)