Rolls-Royce Delivers First Permanent Magnet Tunnel Thruster

Press Release
Friday, September 21, 2012
TT-PM Tunnel Thruster: Image credit Rolls Royce

Newly-developed magnetic tunnel thruster delivered to Norway's Olymic Shipping by Rolls-Royce for its AHTS 'Olymic Octopus'.

Tunnel thrusters are positioned fore and aft on a wide range of ships and provide sideways thrust for maneuvering and holding position in rough seas. The TT-PM offers numerous advantages over traditional tunnel thrusters, including a 25% increase in power output of from the same size propeller, significant reduction in noise and vibration, and can be removed underwater, eliminating the need for dry docking.

The new thruster design concept comprises a permanent magnet motor in a rim, which drives the propeller in the centre. The permanent magnet motor consists of a stator that carries a number of electrical coil windings, and a rotor fitted with a number of very strong permanent magnets. By having the motor in the rim, this frees up space directly above the thruster where thruster motors are normally located, making the thruster room available for other equipment or alternative use.

A rotating magnetic field is created by the stator which interacts with the fields of the permanent magnets on the rotor, which generates force to drive the rotor around, providing the mechanical power.

Rolls-Royce has put the thruster through an extensive test programme, operating it continuously for many months, demonstrating its reliability, enhanced maintainability, performance and operational efficiency.

The vessel Olympic Octopus was delivered in 2007 and is a Rolls-Royce design UT 712 L multifunctional anchor-handling vessel (AHTS). The TT-PM is currently being fitted into the hull.

Anders Almestad, President - Offshore, Rolls-Royce said:“We are delighted that Olympic Shipping is the first customer to select our new tunnel thruster. This cutting edge technology is suitable for a range of applications in offshore and merchant vessels, where operators will benefit from its high power output and rapid response to power demand, combined with exceptionally low noise levels .”


 

Maritime Reporter March 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

US to Test 'Submarine' Drone That Can Launch from Ocean Floor

USA’s Defense Advanced Research Projects Agency (DARPA) is testing a drone that can hibernate on the ocean floor for years at a time before being launched to the

Palfinger Chooses NAMJet Waterjets

Netherlands-based Palfinger Boats has launched the first of two Damen-designed FRSQ 1200 fast-rescue/oil response vessels.   Built in Harderwijk, Netherlands,

ABG Ties Up with GTT for LNG Technology

ABG Shipyard Ltd has tied up with Gaztransport and Technigaz (GTT) of France for the maritime transportation and storage of liquefied natural gas (LNG), reports Livemint.

Shipbuilding

Largest All-Electric Pipe Bender Starts Operations at Newport News Shipbuilding

Unison has commissioned what is believed to be the largest all-electric tube bending machine ever produced. The machine has started operations at Newport News Shipbuilding,

SeaZip Takes Delivery of Damen Crew Suppliers

On 28 March, SeaZip Offshore Service named two new Damen Fast Crew Suppliers (FCS) 2610 at Damen Shipyards Gorinchem.   The two vessels, named SeaZip 3 and SeaZip 4,

Damen Delivers Stan Patrol Vessel to RBDF

The Royal Bahamas Defence Force (RBDF) has taken delivery of the fourth and final Stan Patrol 4207, named HMBS Rolly Gray. The four Stan Patrol 4207s form part of the six-year Sandy Bottom project.

 
 
Maritime Security Maritime Standards Naval Architecture Pipelines Pod Propulsion Port Authority Salvage Ship Electronics Ship Simulators 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: 0.1617 sec (6 req/sec)