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Steerprop
Steerprop Oy is a Finnish company that produces azimuth thrusters for marine propulsion. The company was established in 2000 in Rauma by a group of people who had previously worked at Rolls-Royce Marine Division.Tammiaho, E. (2009): Ruoripotkurilaitteiden liiketoiminta Suomessa'. Tekesin katsaus 258/2009. Steerprop's main products are Z-drive and L-drive azimuth thrusters used for main propulsion of tugboats, icebreakers, offshore vessels and passenger ships. Steerprop. In addition to pushing and pulling type thrusters, the company also offers a line of contra-rotating
Contra-rotating, also referred to as coaxial contra-rotating, is a technique wher ...
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Steerprop Company Logo
Steerprop Oy is a Finnish company that produces azimuth thrusters for marine propulsion. The company was established in 2000 in Rauma by a group of people who had previously worked at Rolls-Royce Marine Division.Tammiaho, E. (2009): Ruoripotkurilaitteiden liiketoiminta Suomessa'. Tekesin katsaus 258/2009. Steerprop's main products are Z-drive and L-drive azimuth thrusters used for main propulsion of tugboats, icebreakers, offshore vessels and passenger ships. Steerprop. In addition to pushing and pulling type thrusters, the company also offers a line of contra-rotating
Contra-rotating, also referred to as coaxial contra-rotating, is a technique whe ...
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Tugboat
A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, such as in crowded harbour or narrow canals, or cannot move at all, such as barges, disabled ships, log rafts, or oil platforms. Some are ocean-going, some are icebreakers or salvage tugs. Early models were powered by steam engines, long ago superseded by diesel engines. Many have deluge gun water jets, which help in firefighting, especially in harbours. Types Seagoing Seagoing tugs (deep-sea tugs or ocean tugboats) fall into four basic categories: #The standard seagoing tug with model bow that tows almost exclusively by way of a wire cable. In some rare cases, such as some USN fleet tugs, a synthetic rope hawser may be used for the tow in the belief that the line can be pulled aboard a disabled ship by the crew owing to its lightness ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osakeyhtiö
''Osakeyhtiö'' (; " stock company"), often abbreviated to Oy (), is the term for a Finnish limited company (e.g., Ltd, LLC, or GmbH). The Swedish-language term is '' aktiebolag'', often abbreviated (in Finland) to Ab. The Swedish abbreviation is sometimes included, as in ''Ab Company Oy'', ''Oy Company Ab'', or ''Company Oy Ab''. The abbreviations have been styled in many ways, such as ''Oy'', ''OY'', ''O.Y.'', or even ''O/Y''. The English form is ''Ltd.'' ''Julkinen osakeyhtiö'' ''Julkinen osakeyhtiö'' (pl. ''julkiset osakeyhtiöt'') means "public stock company" and is abbreviated to oyj (). A ''julkinen osakeyhtiö'' can be listed on the Helsinki Stock Exchange. The term's Swedish equivalent is ''Abp'' (''publikt aktiebolag''). An oyj may be called a public limited company or public company in English and may use the abbreviation PLC or the term corporation in the company's English name, for example Remedy Entertainment Plc, Kone Corporation and Nokia Corporation. Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rauma, Finland
Rauma (; sv, Raumo) is a town and municipality of around () inhabitants on the west coast of Finland, north of Turku, and south of Pori. Its neighbouring municipalities are Eura, Eurajoki, Laitila and Pyhäranta. Granted town privileges on 17 April 1442 (then under the rule of Sweden), Rauma is known for its paper and maritime industry, high quality lace (since the 18th century) and the old wooden architecture of the city centre (Old Rauma, Vanha Rauma), which is a UNESCO World Heritage site. History In the 14th century, before it was declared a town, Rauma had a Franciscan monastery and a Catholic church. In 1550, the townsmen of Rauma were ordered to relocate to Helsinki, but this was unsuccessful and Rauma continued to grow. Practically the whole wooden part of the town of Rauma was devastated in the fires of 1640 and 1682. The city centre, which was as large as the town was until 1809, has approximately 600 wooden buildings. The neo-renaissance style of many of the house ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finland
Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland across Estonia to the south. Finland covers an area of with a population of 5.6 million. Helsinki is the capital and largest city, forming a larger metropolitan area with the neighbouring cities of Espoo, Kauniainen, and Vantaa. The vast majority of the population are ethnic Finns. Finnish, alongside Swedish, are the official languages. Swedish is the native language of 5.2% of the population. Finland's climate varies from humid continental in the south to the boreal in the north. The land cover is primarily a boreal forest biome, with more than 180,000 recorded lakes. Finland was first inhabited around 9000 BC after the Last Glacial Period. The Stone Age introduced several differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Propulsion
Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller, or less frequently, in pump-jets, an impeller. Marine engineering is the discipline concerned with the engineering design process of marine propulsion systems. Human-powered paddles and oars, and later, sails were the first forms of marine propulsion. Rowed galleys, some equipped with sail, played an important early role in early human seafaring and warfares. The first advanced mechanical means of marine propulsion was the marine steam engine, introduced in the early 19th century. During the 20th century it was replaced by two-stroke or four-stroke diesel engines, outboard motors, and gas turbine engines on faster ships. Marine nuclear reactors, which appeared in the 1950s, pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euro
The euro ( symbol: €; code: EUR) is the official currency of 19 out of the member states of the European Union (EU). This group of states is known as the eurozone or, officially, the euro area, and includes about 340 million citizens . The euro is divided into 100 cents. The currency is also used officially by the institutions of the European Union, by four European microstates that are not EU members, the British Overseas Territory of Akrotiri and Dhekelia, as well as unilaterally by Montenegro and Kosovo. Outside Europe, a number of special territories of EU members also use the euro as their currency. Additionally, over 200 million people worldwide use currencies pegged to the euro. As of 2013, the euro is the second-largest reserve currency as well as the second-most traded currency in the world after the United States dollar. , with more than €1.3 trillion in circulation, the euro has one of the highest combined values of banknotes and coins in c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azimuth Thruster
An azimuth thruster is a configuration of marine propellers placed in pods that can be rotated to any horizontal angle (azimuth), making a rudder unnecessary. These give ships better maneuverability than a fixed propeller and rudder system. Types of azimuth thrusters There are two major variants, based on the location of the motor: # Mechanical transmission, which connects a motor inside the ship to the outboard unit by gearing. The motor may be diesel or diesel-electric. Depending on the shaft arrangement, mechanical azimuth thrusters are divided into L-drive and Z-drive. An L-drive thruster has a vertical input shaft and a horizontal output shaft with one right-angle gear. A Z-drive thruster has a horizontal input shaft, a vertical shaft in the rotating column and a horizontal output shaft, with two right-angle gears. # Electrical transmission, more commonly called pods, where an electric motor is fitted in the pod itself, connected directly to the propeller without ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Propulsion
Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller, or less frequently, in pump-jets, an impeller. Marine engineering is the discipline concerned with the engineering design process of marine propulsion systems. Human-powered paddles and oars, and later, sails were the first forms of marine propulsion. Rowed galleys, some equipped with sail, played an important early role in early human seafaring and warfares. The first advanced mechanical means of marine propulsion was the marine steam engine, introduced in the early 19th century. During the 20th century it was replaced by two-stroke or four-stroke diesel engines, outboard motors, and gas turbine engines on faster ships. Marine nuclear reactors, which appeared in the 1950s, pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolls-Royce Holdings
Rolls-Royce Holdings plc is a British multinational aerospace and defence company incorporated in February 2011. The company owns Rolls-Royce, a business established in 1904 which today designs, manufactures and distributes power systems for aviation and other industries. Rolls-Royce is the world's second-largest maker of aircraft engines (after General Electric) and has major businesses in the marine propulsion and energy sectors. Rolls-Royce was the world's 16th largest defence contractor in 2018 when measured by defence revenues. Rolls-Royce Holdings plc is listed on the London Stock Exchange, where it is a constituent of the FTSE 100 Index. At the close of London trading on 28 August 2019, the company had a market capitalisation of £4.656bn, the 85th-largest of any company with a primary listing on the London Stock Exchange. The company's registered office is at Kings Place, near Kings Cross in London. History Ownership Rolls-Royce grew from the engineering business ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Z-drive
A Z-drive is a type of marine propulsion unit. Specifically, it is an azimuth thruster. The pod can rotate 360 degrees allowing for rapid changes in thrust direction and thus vessel direction. This eliminates the need for a conventional rudder. The Z-drive is so named because of the appearance (in cross section) of the mechanical driveshaft or transmission configuration used to connect the mechanically supplied driving energy to the ''Z-Drive'' azimuth thruster device. This form of power transmission is called a Z-drive because the rotary motion has to make two right angle turns, thus resembling the letter "Z". This name is used to differentiate the arrangement of drive to that of the L-drive. It does not refer to an electric motor in a rotating pod. The device is different from the Voith-Schneider marine propulsion system (also mechanically linked), which can also quickly change the direction of thrust, as the ''Z-drive'' uses a shrouded conventional screw A screw and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L-drive
An L-drive is a type of azimuth thruster where the electric motor is mounted vertically, removing the second bevel gear from the drivetrain. Azimuth thruster pods can be rotated through a full 360 degrees, allowing for rapid changes in thrust direction and eliminating the need for a conventional rudder. This form of power transmission is called a L-drive because the rotary motion has to make one right angle turn, thus looking a bit like the letter "L". This name is used to make clear the arrangement of drive is different from Z-drive A Z-drive is a type of marine propulsion unit. Specifically, it is an azimuth thruster. The pod can rotate 360 degrees allowing for rapid changes in thrust direction and thus vessel direction. This eliminates the need for a conventional rudder. .... See also * * * * * Notes {{DEFAULTSORT:L-Drive Marine propulsion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
