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Hand Bailer
Bailing is the process of removing water from a vessel. Hand bailers A hand bailer is a device used for manually removing water which has entered a vessel. In the simplest case, it is merely a smaller container which can be filled and then emptied. This kind of device has been in use since early times. It is still in use on small boats and rafts, though some are ''self-bailing''. Some regulations require either or both forms of bailing. File:Nydam.5.jpg, Iron Age hand bailer from Nydam Mose File:Auskjer.JPG, Norwegian "auskjer", traditional hand bailer New Zealand Canoe Bailer in the Cambridge Museum of Archaeology and Anthropology.jpg, A highly ornamented bailer from New Zealand. It is a common item of Austronesian material culture (known as ''nima'' or ''limas'' in various related languages) File:RK 1701 1154 Ösfass.jpg, modern plastic hand bailer Self bailers For some modern types of dinghies in sailing sports hand bailers can be obsolete when they are equipped with s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boat
A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size or capacity, its shape, or its ability to carry boats. Small boats are typically used on inland waterways such as rivers and lakes, or in protected coastal areas. However, some boats (such as whaleboats) were intended for offshore use. In modern Navy, naval terms, a boat is a vessel small enough to be carried aboard a ship. Boats vary in proportion and construction methods with their intended purpose, available materials, or local traditions. Canoes have been used since prehistoric times and remain in use throughout the world for transportation, fishing, and sport. Fishing boats vary widely in style partly to match local conditions. Pleasure boat, Pleasure craft used in boating, recreational boating include ski boats, Pontoon (boat), pontoon boats, and sailboats. House boats may be used for vacationing or long-term residence. Lighter (barge), L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raft
A raft is any flat structure for support or transportation over water. It is usually of basic design, characterized by the absence of a hull. Rafts are usually kept afloat by using any combination of buoyant materials such as wood, sealed barrels, or inflated air chambers (such as pontoons), and are typically not propelled by an engine. Rafts are an ancient mode of transport; naturally-occurring rafts such as entwined vegetation and pieces of wood have been used to traverse water since the dawn of humanity. Human-made rafts Traditional or primitive rafts were constructed of wood, bamboo or reeds; early buoyed or float rafts use inflated animal skins or sealed clay pots which are lashed together. Modern float rafts may also use pontoons, drums, or extruded polystyrene blocks. Depending on its use and size, it may have a superstructure, masts, or rudders. Timber rafting is used by the logging industry for the transportation of logs, by tying them together into rafts and d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Organization For Standardization
The International Organization for Standardization (ISO ; ; ) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries. Membership requirements are given in Article 3 of the ISO Statutes. ISO was founded on 23 February 1947, and () it has published over 25,000 international standards covering almost all aspects of technology and manufacturing. It has over 800 technical committees (TCs) and subcommittees (SCs) to take care of standards development. The organization develops and publishes international standards in technical and nontechnical fields, including everything from manufactured products and technology to food safety, transport, IT, agriculture, and healthcare. More specialized topics like electrical and electronic engineering are instead handled by the International Electrotechnical Commission.Editors of Encyclopedia Britannica. 3 June 2021.Inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Age
The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progressing to protohistory (before written history). In this usage, it is preceded by the Stone Age (subdivided into the Paleolithic, Mesolithic and Neolithic) and Bronze Age. These concepts originated for describing Iron Age Europe and the ancient Near East. In the archaeology of the Americas, a five-period system is conventionally used instead; indigenous cultures there did not develop an iron economy in the pre-Columbian era, though some did work copper and bronze. Indigenous metalworking arrived in Australia with European contact. Although meteoric iron has been used for millennia in many regions, the beginning of the Iron Age is defined locally around the world by archaeological convention when the production of Smelting, smelted iron (espe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nydam Mose
The Nydam Mose, also known as Nydam Bog, is an archaeological site located at Øster Sottrup, a town located in Sundeved, from Sønderborg, Denmark. History In the Iron Age, the site of the bog was a sacred place, where the weapons and ships of vanquished armies were offered to the indigenous gods in thanks for victory over the fallen enemy. Many items were deliberately destroyed (bent, broken or hacked into pieces) in ritual sacrificial acts, from the period 200–400 CE. The first known finds from the bog date from the 1830s, when a local farmer gave old swords and shields as toys to his children. Amongst numerous other items, three boats were found in Nydam Bog. In particular, the long oak boat, commonly known as "the Nydam Boat", maintains a distinguished position amongst Danish Iron Age finds, as it is one of the oldest known rowing vessel in Northern Europe (the Hjortspring boat, also found in Denmark, is even older). The oak boat (''egetræsbåden'') is on display ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austronesian Peoples
The Austronesian people, sometimes referred to as Austronesian-speaking peoples, are a large group of peoples who have settled in Taiwan, maritime Southeast Asia, parts of mainland Southeast Asia, Micronesia, coastal New Guinea, Island Melanesia, Polynesia, and Madagascar that speak Austronesian languages. They also include indigenous ethnic minorities in Vietnam, Cambodia, Myanmar, Thailand, Hainan, the Comoros, and the Torres Strait Islands. The nations and territories predominantly populated by Austronesian-speaking peoples are sometimes known collectively as Austronesia. The group originated from a prehistoric seaborne migration, known as the Austronesian expansion, from Taiwan, circa 3000 to 1500 BCE. Austronesians reached the Batanes Islands in the northernmost Philippines by around 2200 BCE. They used sails some time before 2000 BCE. In conjunction with their use of other maritime technologies (notably catamarans, outrigger boats, lashed-lug boats, and the crab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Material Culture
Material culture is culture manifested by the Artifact (archaeology), physical objects and architecture of a society. The term is primarily used in archaeology and anthropology, but is also of interest to sociology, geography and history. The field considers artifacts in relation to their specific cultural and historic contexts, communities and belief systems. It includes the usage, consumption, creation and trade of objects as well as the behaviors, norms and rituals that the objects create or take part in. Material culture is contrasted with symbolic culture or non-material culture, which include non-material symbols, beliefs and social constructs. However, some scholars include in material culture other intangible phenomena like sound, smell and events, while some even consider it to include language and media. Material culture can be described as any object that humans use to survive, define social relationships, represent facets of identity, or benefit peoples' state of mind, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of The South Pacific
The University of the South Pacific (USP) is a public research university with locations spread throughout a dozen countries in Oceania. Established in 1968, the university is organised as an intergovernmental organisation and is owned by the governments of 12 Pacific island countries: the Cook Islands, Fiji, Kiribati, Marshall Islands, Nauru, Niue, Samoa, Solomon Islands, Tokelau, Tonga, Tuvalu and Vanuatu. USP is an international centre for teaching and research on Pacific culture and environment, with almost 30,000 students in 2017. The university's main campus is in Suva, Fiji, with subsidiary campuses in each member state. History Discussion of a regional university for the South Pacific began in the early 1950s, when an investigation by the South Pacific Commission recommended the creation of a "central institution" for vocational training in the South Pacific, with a university as a distant goal. In December 1962, the Fijian Legislative Assembly discussed establishing a u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinghy
A dinghy is a type of small boat, often carried or Towing, towed by a Watercraft, larger vessel for use as a Ship's tender, tender. Utility dinghies are usually rowboats or have an outboard motor. Some are rigged for sailing but they differ from Dinghy sailing, sailing dinghies, which are designed first and foremost for sailing. A dinghy's main use is for transfers from larger boats, especially when the larger boat cannot Dock (maritime), dock at a suitably-sized port or marina. The term "dinghy towing" sometimes is used to refer to the practice of towing a car or other smaller vehicle behind a motorhome, by analogy to towing a dinghy behind a yacht. Etymology The term is a loanword from the Bengali language, Bengali ', Urdu ', and Hindi '. Definition and basic description The term "dinghy" has some variability in its definition, but is generally a small open boat which may be powered by oars, sail or an outboard motor. Some individual examples have the option of being p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venturi Effect
The Venturi effect is the reduction in fluid pressure that results when a moving fluid speeds up as it flows from one section of a pipe to a smaller section. The Venturi effect is named after its discoverer, the Italian physicist Giovanni Battista Venturi, and was first published in 1797. The effect has various engineering applications, as the reduction in pressure inside the constriction can be used both for measuring the fluid flow and for moving other fluids (e.g. in a vacuum ejector). Background In inviscid fluid dynamics, an incompressible fluid's velocity must ''increase'' as it passes through a constriction in accord with the principle of mass continuity, while its static pressure must ''decrease'' in accord with the principle of conservation of mechanical energy (Bernoulli's principle) or according to the Euler equations. Thus, any gain in kinetic energy a fluid may attain by its increased velocity through a constriction is balanced by a drop in pressure because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bilge Pump
A bilge pump is a water pump used to remove bilge water. Since fuel can be present in the bilge, electric bilge pumps are designed to not cause sparks. Electric bilge pumps are often fitted with float switches which turn on the pump when the bilge fills to a set level. Since bilge pumps can fail, use of a backup pump is often advised. The primary pump is normally located at the lowest point of the bilge, while the secondary pump would be located somewhat higher. This ensures that the secondary pump activates only when the primary pump is overwhelmed or fails, and keeps the secondary pump free of the debris in the bilge that tends to clog the primary pump. Ancient bilge force pumps had a number of common uses. Depending on where the pump was located in the hull of the ship, it could be used to suck in sea water into a live fish tank to preserve fish until the ship was docked and the fish ready to be sold. Another use of the force pump was to combat fires. Water would again be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
