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Sector Light
A sector light is a man-made pilotage and position fixing aid that consists of strictly delineated horizontal angle light beams to guide water-borne traffic through a safe channel at night in reasonable visibility. Sector lights are most often used for safe passage through shallow or dangerous waters. This may be when leaving or entering harbour. Nautical charts (paper and electronic) give all the required information. Sectors of colored glass (or plastic) are placed in the lanterns of these lights. The light will then show these colors when observed certain bearings. Bearings referring to a sector are given in degrees true, as observed from sea. Though the colors of the light will change, the characteristics will not. The change of color is not abrupt. The transition is made through an arc of uncertainty of 2° or greater. The colors that are used, are conform to the IALA Maritime Buoyage system that is designed by the International Association of Lighthouse Authorities: * wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and the advent of much cheaper, more sophisticated, and more effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs and promontories, unlike many mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norway
Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of Norway. Bouvet Island, located in the Subantarctic, is a Dependencies of Norway, dependency, and not a part of the Kingdom; Norway also Territorial claims in Antarctica, claims the Antarctic territories of Peter I Island and Queen Maud Land. Norway has a population of 5.6 million. Its capital and largest city is Oslo. The country has a total area of . The country shares a long eastern border with Sweden, and is bordered by Finland and Russia to the northeast. Norway has an extensive coastline facing the Skagerrak strait, the North Atlantic Ocean, and the Barents Sea. The unified kingdom of Norway was established in 872 as a merger of Petty kingdoms of Norway, petty kingdoms and has existed continuously for years. From 1537 to 1814, Norway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diego Garcia
Diego Garcia is the largest island of the Chagos Archipelago. It has been used as a joint UK–U.S. military base since the 1970s, following the expulsion of the Chagossians by the UK government. The Chagos Islands are set to become a former British Overseas Territories, British overseas territory — a treaty to transfer sovereignty from the UK to Mauritius was signed on 22 May 2025, with a provision that the military base at the island would remain under British control for at least 99 years. Located just south of the equator in the central Indian Ocean, Diego Garcia lies east of Tanzania, east-southeast of Somalia, south of the Maldives, southwest of India, west-southwest of Sumatra, northwest of Australia, and northeast of Mauritius#Mauritius_Island, Mauritius Island. Diego Garcia is part of the Chagos–Laccadive Ridge, Chagos-Laccadive Ridge, an underwater mountain range that includes the Lakshadweep, the Maldives, and the other 60 small islands of the Chagos Archi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PEL Sector Light
The PEL sector light is a projector style marine beacon which is used to guide maritime vessels. It does this by projecting a colored sector out to sea with very sharp color changes as the mariner transitions from one sector to the next. Typical PEL sector lights will have a complete color change over 1 meter (sideways movement) when the mariner is 5 km from the beacon. The PEL's application becomes relevant to the mariner when combined with a local marine chart as each application of a PEL varies greatly. They are used for guiding vessels into harbor, traffic separation or to illuminate hazards. The main advantage to a PEL sector light is that it has very sharp transitions between colors (typical 0.05°) and is bright enough to be used in daylight with up to 10 Nautical Miles or 18.5 km visibility. Origin The term PEL is a generalized trademark of the Physics and Engineering Laboratory which was part of the Department of Scientific and Industrial Research (DSIR), a N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Columbia
British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, forests, lakes, mountains, inland deserts and grassy plains. British Columbia borders the province of Alberta to the east; the territories of Yukon and Northwest Territories to the north; the U.S. states of Washington (state), Washington, Idaho and Montana to the south, and Alaska to the northwest. With an estimated population of over 5.7million as of 2025, it is Canada's Population of Canada by province and territory, third-most populous province. The capital of British Columbia is Victoria, British Columbia, Victoria, while the province's largest city is Vancouver. Vancouver and its suburbs together make up List of census metropolitan areas and agglomerations in Canada, the third-largest metropolit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fisgard Lighthouse National Historic Site
Fisgard Lighthouse National Historic Site, on Fisgard Island at the mouth of Esquimalt Harbour in Colwood, British Columbia, is the site of Fisgard Lighthouse, the first lighthouse on the west coast of Canada. The lighthouse was constructed in 1859–60 by the British colonial government of the Colony of Vancouver Island, and it shone its first light on 16 November 1860. It was employed by twelve full-time lighthouse keepers, before being automated in 1929. It has remained in continuous operation, though a fire in 1957 put it out of commission for a year. The light shows a white isophase light of 2 second period in a sector from 322° to 195° at above mean sea level, and in other directions it shows red shutters. The white tower is floodlit below balcony level. It was formally recognized as a National Historic Sites of Canada, National Historic Site of Canada on 3 November 1958. An artificial causeway connecting it to Fort Rodd Hill National Historic Site was constructed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Admiralty Chart No 3032 Rauna To Tananger, Published 1970 Cropped Kolnesholmane
Admiralty most often refers to: *Admiralty, Hong Kong *Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964 *The rank of admiral *Admiralty law Admiralty can also refer to: Buildings * Admiralty, Trafalgar Square, a pub in London *Admiralty, Saint Petersburg, Russia * Admiralteyskaya (Saint Petersburg Metro), a metro station in Saint Petersburg, Russia, the name means "Admiralty" *Admiralty Arch in London, England * Admiralty House, London *Admiralty House, Sydney * Dutch Admiralty, a group of follies at Tsarskoye Selo, Russia * Former Admiralty House, Singapore Law * Admiralty court * Admiralty law, also called Maritime Law * Amirauté (New France) Naval organizations *Admiralty (navy), a governmental and/or naval body responsible for the administration of a navy Germany * German Imperial Admiralty, ''Kaiserliche Admiralität'' * German Imperial Admiralty Staff, ''Admiralstab'' Netherlands *Admiralty of Amsterdam * Admiralty of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Starboard
Port and starboard are Glossary of nautical terms (M-Z), nautical terms for watercraft and spacecraft, referring respectively to the left and right sides of the vessel, when aboard and facing the Bow (watercraft), bow (front). Vessels with bilateral Symmetry (geometry), symmetry have left and right halves which are mirror images of each other. One asymmetric feature is where access to a boat, ship, or aircraft is at the side; it is usually only on the port side (hence the name). Side Port side and starboard side respectively refer to the left and right sides of the vessel, when aboard and facing the bow. The port and starboard sides of the vessel always refer to the same portion of the vessel's structure, and do not depend on the position of someone aboard the vessel. The port side is the side to the left of an observer aboard the vessel and , towards the direction the vessel is heading when underway in the forward direction. The starboard side is to the right of such an obser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port (nautical)
Port and starboard are nautical terms for watercraft and spacecraft, referring respectively to the left and right sides of the vessel, when aboard and facing the bow (front). Vessels with bilateral symmetry have left and right halves which are mirror images of each other. One asymmetric feature is where access to a boat, ship, or aircraft is at the side; it is usually only on the port side (hence the name). Side Port side and starboard side respectively refer to the left and right sides of the vessel, when aboard and facing the bow. The port and starboard sides of the vessel always refer to the same portion of the vessel's structure, and do not depend on the position of someone aboard the vessel. The port side is the side to the left of an observer aboard the vessel and , towards the direction the vessel is heading when underway in the forward direction. The starboard side is to the right of such an observer. This convention allows orders and information to be communicated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
