Cruise Ship Technology: Azipod Efficiency Gains 2%

Friday, January 20, 2012
Azipod with X-tail and optimized fin. (Photo: ABB)

One of the original creators of podded propulsion solutions -- a technology routinely featured on the world's largest cruise ships -- for the maritime market announced another breakthrough which improves efficiency further. ABB reports that recent modifications to its Azipod propulsion unit frame design have seen hydrodynamic efficiency improved by more than two percent. The modifications include a newly optimized Azipod fin shape and a new pod cap structure, called Xtail. The revised fin structure receives water flow from the propeller at a new, less acute angle, and its new curved design redirects the flow more efficiently. The unit’s new X-tail, installed for the pod cap structure, straightens water flow on ejection from the Azipod propulsor, minimizing water swirling.  Royal Caribbean International’s Radiance of the Seas was the first cruise ships to benefit from the new fin shape and X-tail. The modifications to Azipod were completed during its drydock visit in May 2011. Her sailings from May to September witnessed the benefits when compared to a sister vessel and her previous operational portfolio: more than 2 percent in hydrodynamic efficiency improvement was achieved.

Based on the positive result from the test, ABB will now include its new features in new Azipod XO units and provide refitted services to existing vessels equipped with older Azipod VO and XO units.
At the beginning of 2011 ABB together with Eniram introduced Azipod Dynamic Optimizer (ADO), a software tool which optimizes the Azipod toe angle. The tool has helped to improve unit efficiency and initial results from the trial installation on Holland America Line’s Noordam indicate that 1.5 percent savings may be achievable on this vessel.
When the Azipod propulsion system was first introduced to the cruise market in 1990s, around an eight percent rise in efficiency was recorded compared to existing ships, in terms of shaft line efficiency, according to the manufacturer. After that, step by step improvements were made to the Azipod shape, resulting in about another seven percent efficiency improvement. Two years ago, when ‘next generation’ Azipod - Azipod XO units were launched, another two percent improvement was achieved. Thus combining this to the recent improvements, Azipod hydrodynamic efficiency has totally been improved by more than 12 percent compared to the first cruise vessel application.
To date, over 100 vessels have been equipped with Azipod propulsion units and more than 240 Azipod units have been delivered or are on order.
 
Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

NMEA Awards Top Electronic Makers

Marine electronics experts named 11 products in nine categories as winners of the 2014 NMEA Product Awards. Once again, Furuno USA was named Manufacturer of the Year--Support.

Maritime Broadband Opens Office in Greece

Maritime Broadband has expanded its worldwide footprint by opening an office, Maritime Broadband Hellas, in Athens, Greece. The new office addresses the growing

Statoil: New Oil in the Grane Area

Statoil has together with PL169 partners proved new oil resources in the D-structure in the vicinity of the Grane field in the North Sea.   Well 25/8-18 S, drilled by the rig Transocean Leader,

Marine Propulsion

B COOL Acquires MEMAC

With the acquisition of MEMAC, B COOL A/S now offers customers one entry to multiple maritime systems – both refrigeration solutions and monitoring of the engine

Mitsubishi Super Skiving System

Mitsubishi Heavy Industries, Ltd. (MHI) has completed development of the "Mitsubishi Super Skiving System" for machining internal gears with high speed and outstanding precision.

Mitsubishi: First-Ever Licensing Deal to Chinese for Marine Propellers

Mitsubishi Heavy Industries Marine Machinery & Engine Co., Ltd. (MHI-MME), a group company of Mitsubishi Heavy Industries, Ltd. (MHI),  concluded a licensing agreement

Cruise Ship Trends

Cruise Ship Returns to Texas after Ebola Concern

The Carnival Magic cruise ship was en route back to the United States on Saturday with a passenger from Texas who might have handled specimens of the first Ebola

Kiel's 2014 Cruise Shipping Season Ends

Expanded terminal capacities created at Berth 1 This year’s cruise shipping season in Kiel closes on the evening of October 18 when the AIDAcara sets sail for the Canary Islands.

Cruise Ship Passenger Isolated Due to Ebola Risk

A Texas hospital employee who may have handled lab specimens from an Ebola victim has entered voluntary isolation on board a Carnival cruise ship in the Caribbean.

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Pipelines Ship Repair Shipbuilding / Vessel Construction Sonar Winch
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: 0.1282 sec (8 req/sec)