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Understen
Understen is a Swedish island and lighthouse station located in South Kvarken, east of Öregrund at the northern tip of sea of Åland in Sweden. History The first day beacon on the island was built in the 18th century. The first lighthouse was built in 1848, and lit in November that year with a colza oil lamp. In 1880 a kerosene lamp was added but the lighthouse was considered too short (13 metres) and weak, and plans for the construction of a more powerful tower started. In 1916 the new much higher tower was completed and fitted with a powerful rotating Fresnel lens in 1922. The old tower was not demolished and survives to this day, but its light equipment was removed. The keepers left their job in 1968, after the tower was automated in 1966. The island has been used as a station for the Swedish military due to its strategic location in the sea, and was staffed by military personnel in 1975–1996. On the island is also an observation tower built by the military. That tower i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lighthouses And Lightvessels In Sweden
This is a list of lighthouses and lightvessels in Sweden. Lightvessels *Almagrundet * Old Finngrundet lightvessel, now a museum ship * Fladen Lighthouses * Agö, Hälsingland * Bergudden, Västerbotten * Bjuröklubb, Västerbotten *Brämön, Ångermanland *Bönan, Gästrikland *Djursten, Uppland * Eggegrund, Gästrikland *Falsterbo Lighthouse, Skåne * Falsterborev, Skåne * Faludden, Gotland * Finngrundet, Uppland * Fårö Lighthouse, Gotland * Garpen, Småland *Gotska Sandön, Gotland * Grundkallen, Uppland * Grönskär, Södermanland * Gåsören, Västerbotten * Hallands Väderö, Skåne *Hanö, Blekinge *Hoburgen, Gotland * Holmögadd, Ångermanland *Huvudskär, Södermanland * Hållö, Bohuslän * Häradskär, Östergötland * Hätteberget, Bohuslän * Högbonden, Ångermanland * Högby Lighthouse, Öland * Kapelludden, Öland *Kullen Lighthouse, Kullaberg, Skåne *Landsort, Södermanland * Lungö, Ångermanland * Långe Erik, Öland *Långe Jan, Öland *Malören, Norrbot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Kvarken
South Kvarken ( fi, Ahvenanrauma, sv, Södra Kvarken) is the narrowest stretch of sea between Finnish Åland and Sweden, forming a strait connecting the Sea of Åland and the Bothnian Sea The Bothnian Sea ( sv, Bottenhavet; fi, Selkämeri) links the Bothnian Bay (also called the Bay of Bothnia) with the Baltic proper. Kvarken is situated between the two. Together, the Bothnian Sea and Bay make up a larger geographical entity, t ... of approximately 30 km (18.5 mi) across. Straits of Finland Straits of Sweden Finland–Sweden border International straits Landforms of Västerbotten County Gulf of Bothnia {{Åland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Öregrund
Öregrund is a locality situated in Östhammar Municipality, Uppsala County, Sweden. As of 2010, it had 1,555 inhabitants. It is located by the Baltic Sea, on the coast of Uppland. Despite its small population, Öregrund is still commonly referred to as a ''city'' for historical reasons. History The town was granted a royal charter in 1491, by request from citizens from nearby city of Östhammar. Östhammar had once been a coastal town, but due to post-glacial rebound its harbour had become useless. The royal council granted the request to construct a city at the end of the archipelago where the sea opened. It further proclaimed "the city shall forever be known as Öregrund". The small but expanding city soon became a point of conflict. In 1520 Christian II of Denmark conquered Stockholm. A young Gustav Eriksson tried to gather an army, and Öregrund became the port whereto ships with men and weapons were transported. As a countermeasure, the Danish King had the city burnt i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Of Åland
The Åland Sea (or the Sea of Åland; sv, Ålands hav, fi, Ahvenanmeri) is a waterway in the southern Gulf of Bothnia, between Åland and Sweden. It connects the Bothnian Sea with the Baltic Sea proper. The western part of the basin is in Swedish territorial waters while the eastern part is in Finnish territorial waters. The Åland Sea has two sub-basins. The main basin is the Åland Sea proper, also called the northern Åland Sea basin. In the south, there is the smaller Lågskär Deep, also called the Lågskär Basin or the southern Åland Sea basin. The narrowest part on the northern edge of the basin is named the Southern Quark or South Kvarken ( sv, Södra Kvarken, fi, Ahvenanrauma). The trench running on the bottom of the Sea of Åland contains the second-deepest spot of the Baltic Sea, at a depth of 301 meters, which is second only to Landsort Deep. The mean depth of Åland Sea is 75 m, area 5,477 km2 and its volume is 411 km³. The Archipelago Sea and the Ål ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colza Oil
Close-up of canola blooms Canola flower Rapeseed oil is one of the oldest known vegetable oils. There are both edible and industrial forms produced from rapeseed, the seed of several cultivars of the plant family Brassicaceae. Historically, it was eaten in limited quantities due to high levels of erucic acid, which is damaging to the cardiac muscle of animals and imparts a bitter taste, and glucosinolates, which made it less nutritious in animal feed. Rapeseed oil can contain up to 54% erucic acid. Canola oil is a food-grade version derived from rapeseed cultivars bred for low erucic acid content. Also known as low erucic acid rapeseed (LEAR) oil, it has been generally recognized as safe by the United States Food and Drug Administration. Canola oil is limited by government regulation to a maximum of 2% erucic acid by weight in the US and the EU, with special regulations for infant food. These low levels of erucic acid do not cause harm in humans. In commerce, non-food variet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerosene
Kerosene, paraffin, or lamp oil is a combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in aviation as well as households. Its name derives from el, κηρός (''keros'') meaning "wax", and was registered as a trademark by Canadian geologist and inventor Abraham Gesner in 1854 before evolving into a generic trademark. It is sometimes spelled kerosine in scientific and industrial usage. The term kerosene is common in much of Argentina, Australia, Canada, India, New Zealand, Nigeria, and the United States, while the term paraffin (or a closely related variant) is used in Chile, eastern Africa, South Africa, Norway, and in the United Kingdom. The term lamp oil, or the equivalent in the local languages, is common in the majority of Asia and the Southeastern United States. Liquid paraffin (called mineral oil in the US) is a more viscous and highly refined product which is used as a laxative. Paraffin wax is a waxy solid extracted from pet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. It has been called "the invention that saved a million ships." The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens was first proposed by Count Buffon and independently reinvented by Fresnel. The ''catadioptric'' form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source and add it to the beam of a lighthouse, making the light visible from greater distances. Description The Fresnel lens redu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Maritime Administration
The Swedish Maritime Administration ( sv, Sjöfartsverket) is the government agency in Sweden which provides services to the transport sector by keeping the sea lanes open and safe. The agency is to a certain degree financed through fees levied on commercial shipping. The main services of the Maritime Administration include: pilotage, maintenance of marine fairways, ice-breaking, hydrographics, maritime search and rescue, seamen's service. It also maintains the lighthouses and other aids to navigation of Sweden. Until 1 January 2009, it also was responsible for maritime safety inspection. Seagoing vessels navigating the Baltic Sea must meet certain ice class requirement. While its mainly deals with merchant shipping, other maritime activities are also taken into account. Sjöfartsverket runs the Joint Rescue Center Gothenburg. See also * List of lighthouses and lightvessels in Sweden * Sea traffic management * Swedish Coast Guard The Swedish Coast Guard ( sv, Kustbevakn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norrköping
Norrköping (; ) is a city in the province of Östergötland in eastern Sweden and the seat of Norrköping Municipality, Östergötland County, about 160 km southwest of the national capital Stockholm, 40 km east of county seat Linköping and 60 km west of the Södermanland capital of Nyköping. The city has a population of 95,618 inhabitants in 2016, out of a municipal total of 130,050,Folkmängd i Norrköpings kommun den 31 December 2010 making it Sweden's tenth largest city and eighth largest municipality. The city is situated by the mouth of the river , at |
Grisslehamn
Grisslehamn is a locality and port located on the coast of the Sea of Åland in Norrtälje Municipality, Stockholm County, Sweden. The locality had 249 inhabitants in 2010. The name Grisslehamn was first mentioned in a document from 1376 about the mail route between Sweden and Finland. This Grisslehamn was located some 20 km south of today's location. In the mid-18th century, most of the old village was destroyed in a fire, and it was decided to move Grisslehamn to its current location to make the mail route shorter. Conveying mail by row boat from Sweden to the Åland islands, whence it was transported to the Finnish mainland, was, together with fishing, one of the most important sources of income for the inhabitants of Grisslehamn and other parts of Roslagen for a long time, until steam ships took over the mail routes in the early 20th century. Today the port is the Swedish terminal of the Eckerö Linjen ferries which cross to Berghamn on the island of Eckerö in the Åland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islands Of Norrtälje Municipality
An island or isle is a piece of subcontinental land completely surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. Sedimentary islands in the Ganges Delta are called chars. A grouping of geographically or geologically related islands, such as the Philippines, is referred to as an archipelago. There are two main types of islands in the sea: continental islands and oceanic islands. There are also artificial islands (man-made islands). There are about 900,000 official islands in the world. This number consists of all the officially-reported islands of each country. The total number of islands in the world is unknown. There may be hundreds of thousands of tiny islands that are unknown and uncounted. The number of sea islands in the world is estimated to be more than 200,000. The t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islands Of The Stockholm Archipelago
An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. Sedimentary islands in the Ganges delta are called chars. A grouping of geographically or geologically related islands, such as the Philippines, is referred to as an archipelago. There are two main types of islands in the sea: continental and oceanic. There are also artificial islands, which are man-made. Etymology The word ''island'' derives from Middle English ''iland'', from Old English ''igland'' (from ''ig'' or ''ieg'', similarly meaning 'island' when used independently, and -land carrying its contemporary meaning; cf. Dutch ''eiland'' ("island"), German ''Eiland'' ("small island")). However, the spelling of the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
