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Topic: Azimuth thruster

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Rudder

Propeller

	Rolls-Royce: Marine
		Azipull thrusters are attractive not only for their efficiency but because their rudder effect can provide good steering on hullforms which are in themselves not particularly stable on course.
		Here the thrusters are coupled to the main engines mechanically with shaft generators in the same short shaftline, giving propulsion redundancy and the ability to supply power for cargo pumps and ship services from one engine in port.
		Recently, the application of Azipull thrusters as the main propulsion system for merchant extended further, with the ordering of a pair of thrusters for a 7,500 cubic metre gas carrier to be built in Poland for the Netherlands shipowner Anthony Veder.
	www.rolls-royce.com /marine/about/news_centre/news/2006/newsitem22.htm (1000 words)

	Azimuth thruster - Wikipedia
		Al in 1964 werd door Harbormaster een mechanisch aangedreven azimuth thruster ontwikkeld voor gebruik in sleepboten.
		In eerste instantie werd het vooral toegepast op cruiseschepen en shuttle tankers, tegenwoordig worden steeds meer schepen met deze voortstuwing uitgerust.
		De thrusters zijn niet gebonden aan een specifieke plek.
	nl.wikipedia.org /wiki/Azimuth_thruster#Geschiedenis (549 words)

	Azimuth Thrusters, azimuth thrusters
		Azimuth thrusters are for main propulsion of displacement vessels.
		Azimuth thrusters are used when enhanced maneuverability is required in applications such as dynamic positioning, ship escort and ship docking services.
		Azimuth thrusters are available in Z-drive configuration for direct diesel engine drive or in L-drive configuration for electric or hydraulic drive.
	www.thrustmastertexas.com /products/azimuthThrusters.html (188 words)

	Azimuth thruster - Education - Information - Educational Resources - Encyclopedia - Music
		Azimuth thrusters are an electrically-based method of propulsion for ships.
		The thruster is located in a 'pod' underneath the ship, and can be rotated in any direction.
		Azimuth thrusters are said to give ships better manoeuverability than a propellor and rudder system.
	www.music.us /education/A/Azimuth-thruster.htm (291 words)

	Knowledge Testing
		Azimuth sectors within which thruster output is significantly limited to prevent noise and/or inflow degradation of other thrusters
		One thruster is at 20 feet ~6.5m depth.
		An identical thruster is at a depth of 80 feet ~ 26m.
	www.dynamic-positioning.com /knowledge_testing_answers.cfm (1704 words)

	Steerprop Ltd - Products/Info
		Azimuth propulsors have during the last decade become a more and more popular solution as propulsion means for all kinds of vessels.
		Of course, the extraordinary manoeuvring that the azimuth thrusters provide is one of the most valued features in most vessel concepts.
		Tugs are the typical azimuth thruster application - with ducted propellers a good bollard pull can be obtained combined with the superior manoeuvrability and agility.
	www.steerprop.com /productsappli.htm (368 words)

	Vessel having demountable submerged propeller unit - Patent 4634389
		The thruster is mounted to double skins 25, 26 of the bottom of the vessel by means of a sealing tube 28 that is welded between the skins 25,26 and has a flange 29 at its lower end.
		The attitude of the thruster 18 relative to the vessel may be adjusted by operation of the motors 64 that rotate pinions 56, 57 and hence the steering shaft 42 and the steering angle is detected by a rotary transducer 70 or similar device.
		When the thruster is to be removed from the vessel a platform 72 that mounts the hydraulic motors 64 is disconnected from the ship's bottom 25, the couplings 60, 61 to pinions 56, 57 are released and the platform 72 carrying motors 64 and shafts 62, 63 is raised to the position shown in FIG.
	www.freepatentsonline.com /4634389.html (1925 words)

	NationMaster - Encyclopedia: Azimuth thruster
		Azimuth thrusters are said to give ships better maneuverability than a propeller and rudder system.
		Azimuth Thrusters on a tug at Damen Shipyard, Gorinchem, The Netherlands.
		Azimuth thrusters are used when enhanced maneuverability is required in applications such as dynamic positioning, ship escort and ship docking services.
	www.nationmaster.com /encyclopedia/Azimuth-thruster (774 words)

	Vessel having demountable submerged propeller unit - Patent 4634389
		The thruster is mounted to double skins 25, 26 of the bottom of the vessel by means of a sealing tube 28 that is welded between the skins 25,26 and has a flange 29 at its lower end.
		The attitude of the thruster 18 relative to the vessel may be adjusted by operation of the motors 64 that rotate pinions 56, 57 and hence the steering shaft 42 and the steering angle is detected by a rotary transducer 70 or similar device.
		When the thruster is to be removed from the vessel a platform 72 that mounts the hydraulic motors 64 is disconnected from the ship's bottom 25, the couplings 60, 61 to pinions 56, 57 are released and the platform 72 carrying motors 64 and shafts 62, 63 is raised to the position shown in FIG.
	freepatentsonline.com /4634389.html (1897 words)

	Azimuth Thrusters - Ship Technology
		Azimuth thrusters are electric podded drive systems, which are mounted on a 360 degree rotating shaft under the ship.
		There is no rudder required in an azimuth system and hence, the underwater dynamics are improved which not only increases manoeuvrability, but azimuth thrusters also include the advantages of combined engine systems.
		Some azimuth thrusters promise energy savings of better than 10%, thanks to a combination of the benefits of a Twin Propeller and new permanently-excited synchronous motors.
	www.ship-technology.com /contractors/propulsion/azimuth.html (213 words)

	Steerprop Ltd - Products/Info
		Azimuth propulsors have during the last decade become a more and more popular solution as propulsion means for all kinds of vessels.
		Of course, the extraordinary manoeuvring that the azimuth thrusters provide is one of the most valued features in most vessel concepts.
		Tugs are the typical azimuth thruster application - with ducted propellers a good bollard pull can be obtained combined with the superior manoeuvrability and agility.
	www.steerprop.fi /productsappli.htm (368 words)

	Azimuthing thrusters for marine vessels - Rolls-Royce
		Azimuth thrusters with CP propellers in a stern drive tug give the best control under all operating conditions.
		Azimuthing thrusters enable the propeller to rotate 360 degrees around a vertical axis so that the thrusters unit can perform both propulsion and steering duties.
		The azimuthing thruster is ideal for a wide range of vessels.
	marine.rolls-royce.com /Azimuthing-thrusters-for-marine-vessels (121 words)

	Numerical Modelling of the Ulstein-Aquamaster Azipull Azimuth Thruster - SINTEF
		It combines the advantages of the pulling thruster with the flexibility inherent in a controllable-pitch propeller to match almost any type of drive to particular requirements.
		Internally, the thruster has a purely mechanical drive system based on bevel gears at the top and bottom of the leg.
		Propeller thrust TP and torque Q as well as thruster longitudinal X, transverse forces Y and steering moment MZ were measured.
	www.sintef.no /content/page1____5909.aspx (720 words)

	Further use for Brunvoll thrusters \| Scandinavian Shipping Gazette
		Brunvoll’s Retractable Azimuth Thrusters have for this reason been installed in a number of coast guard vessels, shuttle tankers and many offshore and research vessels, even though the main benefit for these vessel is greater manoeuvrability and positioning.
		According to Per Olav Løkseth, marketing director at Brunvoll AS, it is interesting to note that many of the vessels that have Brunvoll azimuth thrusters installed have experienced the need for emergency propulsion, even as early as when they were on sea trails after delivery from a shipyard.
		The use of thrusters as emergency propulsion was evident as early as the late 1970s when a Nordkapp Class coast guard vessel had its turbo charger damaged during sea trails.
	www.shipgaz.com /magazine/issues/2004/24/2404_artikel.php (400 words)

	Skipsrevyen 6/2002 - Azipull opens a new future
		Azimuth thrusters have become the preferred means of propulsion in a steadily wider section of the marine market.
		Azipull is a mechanical azimuth thruster equipped with a pulling propeller which may be either controllable pitch or fixed pitch, depending on the choices made in the rest of the experience drawn from designing and manufacturing thousands of thrusters of many types.
		Each azimuth thruster is coupled to its own diesel engine by a short drive shaft, giving a high level of propulsion system redundancy and excellent manoeuverability.
	www.skipsrevyen.no /artikler/6-02/843.html (1329 words)

	Society Maritime Industries : News
		Azipull thrusters are attractive not only for their efficiency but because their rudder effect can provide effective steering for hullforms which are in themselves not particularly stable.
		Here the thrusters are coupled to the main engines mechanically with shaft generators in the same short shaftline, giving propulsion redundancy and the ability to supply power for cargo pumps and ship services from one engine in port.
		Recently, the application of Azipull thrusters as the main propulsion system for merchant vessels extended further, with the ordering of a pair of thrusters for a 7,500m3 gas carrier to be built in Poland for the Netherlands shipowner Anthony Veder.
	www.maritimeindustries.org /news/view.jsp?ref=1742&start=11 (989 words)

	Rolls-Royce notes increased interest in Azipulls
		Azipull thrusters are attractive not only for their efficiency but because their rudder effect can provide effective steering for hull forms which are in themselves not particularly stable.
		The latest application field for Azipull thrusters is in passenger vessel propulsion, and the superyacht market is also beginning to show interest, said the company, noting that prosperous times have produced owners who want yachts from 50m (164ft) and up, for their own pleasure or for charter.
		The thrusters can be used in a variety of mechanical and diesel electric transmissions, giving freedom in positioning the machinery and opening the way for different accommodation layouts.
	www.ybw.com /ibinews/newsdesk/20061016125552ibinews.html (786 words)

	Thruster - The Wordbook Encyclopedia
		Thewordbook is a comprehensive encyclopedia and a reference search engine, in which you have found this entry about Thruster.
		A thruster is a small propulsive device used by spacecraft and watercraft for station keeping, altitude control, or long duration low thrust acceleration.
		Azimuth thruster, pod underneath a ship, instead of a propeller and rudder
	www.thewordbook.com /Thruster (217 words)

	Nortrade - Arctic & offshore competence gives competitive edge
		Azimuth thrusters enable the propeller to rotate 360 degrees around a vertical axis so that the thrusters unit can perform both the propulsion and steering duties, and Rolls-Royce is one of the world’s leading producers of these.
		Whereas most azimuth thrusters that Rolls-Royce delivers for DP and low-speed manoeuvring systems are so-called pushing thrusters with the propeller located downstream of the gearhouse and vertical leg, Azipull is a pulling thruster with the propeller located upstream of the gearhouse.
		Leif Vartdal of Rolls-Royce Marine’s development division is one of the leaders behind the development of the Azipull azimuth thruster, and he is very pleased with the thruster’s increasing market shares for different vessel types all over the world.
	www.nortrade.com /index.php?cmd=show_article&id=197 (1996 words)

	Liquid-cooled dynamic positioning at Havila multi-field standby vessel
		On the Havila Troll, the first UT527 to set sail, a liquid-cooled Vacon NX drive with a power of 1.5 MW is controlling the azimuth thruster used for dynamic positioning of the vessel.
		Azimuth thruster stands for a propulsor consisting of a propeller that can be rotated around a vertical shaft.
		On the Havila, a liquid-cooled Vacon NX with a power of 1500 kW is controlling the Azimuth thruster used for dynamic positioning of the vessel.
	www.vacon.com /Default.aspx?Id=461167 (694 words)

	Step Change in Safety
		At the time of the incident, the vessel was working on DP alongside the East face of the platform with the port side presented to the jacket and with 25 to 30 ks.
		Both azimuth thrusters stopped at 10.07 Hrs eliminating the vessel's station keeping capability and causing the vessel to drift to the NW (ahead).
		Azimuth thruster No. 1 re-started within one minutes but stopped once again apparently as a direct result of the re-starting of No. 2 which also shut down immediately.
	www.stepchangeinsafety.net /StepChange/StepIncidents_showsingleincidentitem.aspx?ID=832 (412 words)

	Seaeye - Falcon & Falcon DR
		Brushless DC thrusters have been used on all Seaeye ROVs since 1987 when the company first introduced this technology to the offshore oil and gas industry.
		The open frame and clutter free layout between decks in the Falcon provides the clearest water flow to 4 horizontal vectored thrusters positioned for optimum thrust and control in all directions and superior station keeping in strong cross currents.
		Falcons are powered by 5 Seaeye Magnetically Coupled Thruster units (MCT1) each capable of achieving 13 kgf thrust at 320W or a combined forward thrust (bollard pull) of 50 kgf.
	www.seaeye.com /falcon.html (2180 words)

	modernwind
		In low wind, sailing upwind or tacking some engine assistance may be required using one or two of the azimuth propellers, adjusted to a thrust angle to obtain the service speed and course balance of the ship.
		During manoeuvring the azimuth propellers aft and the transverse thruster forward can turn and steer the ship with high precision, allowing for a complete envelope of manoeuvres.
		The azimuth units were fitted with DMI stock propellers number 71087 mounted on the aft side of the units.
	www.students.itu.edu.tr /~yildirimo4/modernwind.htm (3502 words)

	Drilling Rig Thruster Equipment - Drilling Thruster Offshore
		Paragraph can be covered using thrusters in a thruster.
		The eight column thruster assisted drilling rig is designed for drilling operations in.
		Therefore when the thruster finally did kick in it would exacerbate the rig s.
	www.drillingrigengineer.com /w7/DrillingRigThrusterEquipment.htm (295 words)

	Azimuth thruster \| English \| Dictionary & Translation by Babylon
		An Azimuth thruster is a configuration of ship propellers placed in pods that can be rotated in any horizontal direction.
		Primary advantages are electrical efficiency, better use of ship space, and lower maintenance costs.
		Ships with azimuth thrusters do not need tugs to dock, though they still require tugs to maneuver in difficult places.
	www.babylon.com /definition/Azimuth_thruster (84 words)

	Rolls-Royce notes increased interest in Azipulls
		A pulling propeller - CP or FP - is mounted ahead of the leg, which is a hydrodynamically optimised streamlined unit incorporating the gear house and a lower fin.
		Azipull thrusters are attractive not only for their efficiency but because their rudder effect can provide effective steering for hull forms which are in themselves not particularly stable.
		The latest application field for Azipull thrusters is in passenger vessel propulsion, and the superyacht market is also beginning to show interest, said the company, noting that prosperous times have produced owners who want yachts from 50m (164ft) and up, for their own pleasure or for charter.
	www.ibinews.com /ibinews/newsdesk/20061016125552ibinews.html (781 words)

	Dassault Systemes: Brunvoll Propels Ships Using Product Lifecycle Management Solutions from IBM and Dassault Systèmes (Site not responding. Last check: )
		Brunvoll, which recently won a substantial contract to develop a retractable azimuth thruster for the Norwegian Navy's new frigate program, uses the PLM platform to enable it to manage complex customer requirements.
		Another example is for our super silent thrusters, where we deliver form-cut tunnel extensions that have to match precisely with the hull form.
		One of the dominant suppliers of thruster units for maneuvering and propulsion used in a wide variety of ships, Brunvoll's compact and efficient organization meets critical propulsion needs worldwide for ships ranging from luxury yachts to mega cruise/ferry vessels, military ships and a wide variety of commercial ships.
	www.3ds.com /news-events/press-room/release/32/1 (929 words)

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