|
River Icebreaker
A river icebreaker is an icebreaker specially designed to operate in shallow waters such as rivers and estuaries, and often able to pass through canals and under bridges. As published by the American Society of Civil Engineers almost a century ago, "On some rivers, particularly where melting first takes place on the upper river, as on the Oder and Weichsel in Germany, the formation of ice jams is a frequent cause of floods." River icebreakers can operate in any navigable waterway to prevent such ice jams. Various river icebreakers, from smaller vessels to the nuclear-powered shallow draft icebreakers ''Taymyr''-class ''Vaygach'' and ''Taymyr'', [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CCGS Amundsen2
CCGS can refer to: * Canadian Coast Guard Ship, a ship prefix *Central Coast Grammar School, a school in Australia *Christ Church Grammar School, a school in Australia *Cooperating Colleges of Greater Springfield The Cooperating Colleges of Greater Springfield (CCGS) is a consortium of accredited colleges and universities located in Hampden County in Western Massachusetts, in and around the city of Springfield. Formed in 1971, the consortium provides vari ... *Crown Championship: Global Series, a worldwide Clash Royale tournament {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coast Guard Cutter Thunder Bay
The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the coastline. The Earth has around of coastline. Coasts are important zones in natural ecosystems, often home to a wide range of biodiversity. On land, they harbor important ecosystems such as freshwater or estuarine wetlands, which are important for bird populations and other terrestrial animals. In wave-protected areas they harbor saltmarshes, mangroves or seagrasses, all of which can provide nursery habitat for finfish, shellfish, and other aquatic species. Rocky shores are usually found along exposed coasts and provide habitat for a wide range of sessile animals (e.g. mussels, starfish, barnacles) and various kinds of seaweeds. Along tropical coasts with clear, nutrient-poor water, coral reefs can often be found between depths of . According to a United Nations atlas, 44% of all people live within 5 km (3.3mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icebreaker
An icebreaker is a special-purpose ship or boat designed to move and navigate through ice-covered waters, and provide safe waterways for other boats and ships. Although the term usually refers to ice-breaking ships, it may also refer to smaller vessels, such as the icebreaking boats that were once used on the canals of the United Kingdom. For a ship to be considered an icebreaker, it requires three traits most normal ships lack: a strengthened hull, an ice-clearing shape, and the power to push through sea ice. Icebreakers clear paths by pushing straight into frozen-over water or pack ice. The bending strength of sea ice is low enough that the ice breaks usually without noticeable change in the vessel's trim. In cases of very thick ice, an icebreaker can drive its bow onto the ice to break it under the weight of the ship. A buildup of broken ice in front of a ship can slow it down much more than the breaking of the ice itself, so icebreakers have a specially designed hull to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oder
The Oder ( , ; Czech, Lower Sorbian and ; ) is a river in Central Europe. It is Poland's second-longest river in total length and third-longest within its borders after the Vistula and Warta. The Oder rises in the Czech Republic and flows through western Poland, later forming of the border between Poland and Germany as part of the Oder–Neisse line. The river ultimately flows into the Szczecin Lagoon north of Szczecin and then into three branches (the Dziwna, Świna and Peene) that empty into the Bay of Pomerania of the Baltic Sea. Names The Oder is known by several names in different languages, but the modern ones are very similar: English and ; Czech, Polish, and , ; (); Medieval Latin: ''Od(d)era''; Renaissance Latin: ''Viadrus'' (invented in 1534). Ptolemy knew the modern Oder as the Συήβος (''Suebos''; Latin ''Suevus''), a name apparently derived from the Suebi, a Germanic people. While he also refers to an outlet in the area as the Οὐιαδούα ''Oui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vistula
The Vistula (; pl, Wisła, ) is the longest river in Poland and the ninth-longest river in Europe, at in length. The drainage basin, reaching into three other nations, covers , of which is in Poland. The Vistula rises at Barania Góra in the south of Poland, above sea level in the Silesian Beskids (western part of Carpathian Mountains), where it begins with the Little White Vistula (''Biała Wisełka'') and the Black Little Vistula (''Czarna Wisełka''). It flows through Poland's largest cities, including Kraków, Sandomierz, Warsaw, Płock, Włocławek, Toruń, Bydgoszcz, Świecie, Grudziądz, Tczew and Gdańsk. It empties into the Vistula Lagoon (''Zalew Wiślany'') or directly into the Gdańsk Bay of the Baltic Sea with a delta of six main branches (Leniwka, Przekop, Śmiała Wisła, Martwa Wisła, Nogat and Szkarpawa). The river is often associated with Polish culture, history and national identity. It is the country's most important waterway and natural symbol, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear-powered Icebreaker
A nuclear-powered icebreaker is an icebreaker with an Nuclear marine propulsion, onboard nuclear power plant that produces power for the vessel's propulsion system. , Russia is the only country that builds and operates nuclear-powered icebreakers, having built a number of such vessels to aid shipping along the Northern Sea Route since the Soviet times. Nuclear-powered icebreakers are much more powerful than their Diesel engine, diesel-powered counterparts. Although nuclear propulsion is expensive to install and maintain, very heavy fuel demands, limitations on range, and difficulty refueling in the Arctic region can make diesel vessels less practical and less economical overall for these ice-breaking duties. During the winter, the ice along the Northern Sea Route varies in thickness from . The ice in central parts of the Arctic Ocean is on average thick. Nuclear-powered icebreakers can force through this ice at speeds up to . In ice-free waters, the maximum speed of the nuclear-p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taymyr Class Nuclear Icebreaker
A nuclear-powered icebreaker is an icebreaker with an onboard nuclear power plant that produces power for the vessel's propulsion system. , Russia is the only country that builds and operates nuclear-powered icebreakers, having built a number of such vessels to aid shipping along the Northern Sea Route since the Soviet times. Nuclear-powered icebreakers are much more powerful than their diesel-powered counterparts. Although nuclear propulsion is expensive to install and maintain, very heavy fuel demands, limitations on range, and difficulty refueling in the Arctic region can make diesel vessels less practical and less economical overall for these ice-breaking duties. During the winter, the ice along the Northern Sea Route varies in thickness from . The ice in central parts of the Arctic Ocean is on average thick. Nuclear-powered icebreakers can force through this ice at speeds up to . In ice-free waters, the maximum speed of the nuclear-powered icebreakers is as much as . Uses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaygach (nuclear Icebreaker)
''Vaygach'' ( rus, Вайгач, p=vɐjˈɡatɕ) is a shallow-draught nuclear-powered icebreaker. She was built in 1989 for the Soviet Union by Wärtsilä Marine Helsinki Shipyard in Finland by order of the Murmansk Shipping Company. Her sister ship is ''Taymyr''. Career 2011 fire On 15 December 2011, two crew members died and a third one was seriously injured in a fire on board ''Vaygach'' while the icebreaker was escorting merchant ships from Dudinka to Murmansk. The fire, which started in one of the crew cabins presumably due to negligence and was extinguished by the crew by 04:00 Moscow time, did not cause any damage to the ship's nuclear reactor.Fire on board of nuclear icebreaker ''Vaygach'', two crew died Maritime Bulletin, 15 December 2011. Design [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taymyr (1987 Icebreaker)
''Taymyr'' ( rus, Таймыр, p=tɐjˈmɨr) is a shallow-draft nuclear-powered icebreaker, and the first of two similar vessels. She was built in 1989 for the Soviet Union in Finland, at the Helsinki Shipyard by Wärtsilä Marine, by order of the Murmansk Shipping Company. Her sister ship is ''Vaygach''. Design General characteristics While ''Taymyr'' is slightly smaller than the ''Arktika''-class nuclear icebreakers, with an overall length of nearly and beam of she is still among the largest polar icebreakers ever built. At the maximum draught of , ''Taymyr'' has a displacement of 21,000 tons. However, she can also operate at a reduced draught of only . ''Taymyr'' has a traditional icebreaker hull with highly raked stem and sloping sides to reduce the ice loads in compressive ice fields and improve maneuverability. The special cold-resistant steel used in the hull was delivered by the Soviet Union. Although designed for a crew of slightly over 100, the large superstruc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icebreakers
An icebreaker is a special-purpose ship or boat designed to move and navigate through ice-covered waters, and provide safe waterways for other boats and ships. Although the term usually refers to ice-breaking ships, it may also refer to smaller vessels, such as the icebreaking boats that were once used on the canals of the United Kingdom. For a ship to be considered an icebreaker, it requires three traits most normal ships lack: a strengthened hull, an ice-clearing shape, and the power to push through sea ice. Icebreakers clear paths by pushing straight into frozen-over water or pack ice. The bending strength of sea ice is low enough that the ice breaks usually without noticeable change in the vessel's trim. In cases of very thick ice, an icebreaker can drive its bow onto the ice to break it under the weight of the ship. A buildup of broken ice in front of a ship can slow it down much more than the breaking of the ice itself, so icebreakers have a specially designed hull to d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Icebreaker")
.jpg "Click for more on -> Nuclear-powered Icebreaker")
