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Inverted Bow
In ship design, an inverted bow (occasionally also referred to as ''reverse bow'') is a ship's or large boat's bow whose farthest forward point is not at the top. The result may somewhat resemble a submarine's bow. Inverted bows maximize the length of waterline and hence the hull speed, and have often better hydrodynamic drag than ordinary bows. On the other hand, they have very little reserve buoyancy and tend to dive under waves instead of piercing or going over them. Inverted bows were popular on battleships and large cruisers in the early 20th century. They fell out of favour, as they were very wet at high speeds and in heavy seas, but have made a comeback on modern ship design. Examples Motor Yacht "A" The 390 ft luxury motor yacht M/Y "A" has an inverted bow, along with a tumblehome hull design. Ulstein X-Bow The Ulstein X-Bow (or just X-BOW) is an inverted ship's bow designed by Ulstein Group to improve handling in rough seas, and to lower fuel consumption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A (ship) At Sorrent 2012 3
A, or a, is the first Letter (alphabet), letter and the first vowel of the Latin alphabet, Latin alphabet, used in the English alphabet, modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is English alphabet#Letter names, ''a'' (pronounced ), plural English alphabet#Letter names, ''aes''. It is similar in shape to the Greek alphabet#History, Ancient Greek letter alpha, from which it derives. The Letter case, uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, "English articles, a", and its variant "English articles#Indefinite article, an", are Article (grammar)#Indefinite article, indefinite arti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A (motor Yacht)
Motor Yacht ''A'' (MY ''A'') is a superyacht designed by Philippe Starck and engineered by naval architect Martin Francis. It was built by the Blohm + Voss shipyard at the HDW deepwater facility in Kiel. It was ordered in November 2004, and delivered in 2008 at a rumoured cost of US$300 million. With a length of and measuring almost 6,000 tonnes, it is one of the largest motor yachts in the world. It is owned by Russian entrepreneur and industrialist Andrey Melnichenko. Design and development "A" was designed by Philippe Starck. According to ''Boat International'', "the design for what would become the world’s most talked about superyacht bubbled into Starck’s mind at his home in Burano, Venice, in 2004. There was no brief beyond an idea of length and a demand for six cabins". Starck is quoted as saying "That was the beauty of the project and the beauty and intelligence of the owner, he just left me completely free," and the article notes that " isintention was t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Science Museum
The Science Museum is a major museum on Exhibition Road in South Kensington, London. It was founded in 1857 and is one of the city's major tourist attractions, attracting 3.3 million visitors annually in 2019. Like other publicly funded national museums in the United Kingdom, the Science Museum does not charge visitors for admission, although visitors are requested to make a donation if they are able. Temporary exhibitions may incur an admission fee. It is one of the five museums in the Science Museum Group. Founding and history The museum was founded in 1857 under Bennet Woodcroft from the collection of the Royal Society of Arts and surplus items from the Great Exhibition as part of the South Kensington Museum, together with what is now the Victoria and Albert Museum. It included a collection of machinery which became the ''Museum of Patents'' in 1858, and the ''Patent Office Museum'' in 1863. This collection contained many of the most famous exhibits of what is now t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bourbon (group)
Bourbon is a French shipping company, based in Marseilles. Bourbon operates in the field of surface and submarine maritime services, on oil, gas and wind farms. The company has 6,820 employees, and the group is present in more than 30 countries. Business Bourbon's activity evolves around 4 businesses: * Bourbon Marine & Logistics: support services for the exploration, development and production of oil and gas fields, in continental and deep offshore: offshore anchoring, towing and positioning; supply and transport of offshore equipment; offshore terminal & FPSO support; integrated logistics services; assistance, salvage and depollution. * Bourbon Mobility: personnel transport for platforms at sea, using speedboats, which offers the oil industry an alternative to the helicopter. * Bourbon Subsea Services: 3 main service lines: engineering, supervision and management of subsea operations; support for the development of oil and gas fields; Inspection, Maintenance and Repair (IMR) o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anchor Handling Tug Supply Vessel
Anchor Handling Tug Supply (AHTS) vessels are mainly built to handle anchors for oil rigs, tow them to location, and use them to secure the rigs in place. AHTS vessels sometimes also serve as Emergency Response and Rescue Vessels (ERRVs) and as supply transports. Many of these vessels are designed to meet the harsh conditions of the North Sea, and can undertake supply duties there between land bases and drilling sites. They also provide towing assistance during tanker loading, deepwater anchor handling, and towing of threatening objects. AHTS vessels differ from platform supply vessels (PSVs) in being fitted with winches for towing and anchor handling, having an open stern to allow the decking of anchors, and having more power to increase the bollard pull. The machinery is specifically designed for anchor handling operations. They also have arrangements for quick anchor release, which is operable from the bridge or other normally crewed locations in direct communication with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megastructures (TV Series)
''Megastructures'' is a documentary television series appearing on the National Geographic Channel in the United States and the United Kingdom, Channel 5 in the United Kingdom, France 5 in France, and 7mate in Australia. Each episode is an educational look of varying depth into the construction, operation, and staffing of various structures or construction projects, but not ordinary construction products. Generally containing interviews with designers and project managers, it presents the problems of construction and the methodology or techniques used to overcome obstacles. In some cases (such as the Akashi-Kaikyo Bridge and Petronas Towers) this involved the development of new materials or products that are now in general use within the construction industry. ''Megastructures'' focuses on constructions that are extreme; in the sense that they are the biggest, tallest, longest, or deepest in the world. Alternatively, a project may appear if it had an element of novelty or are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Five (TV Channel)
Channel 5 is a British free-to-air public broadcast television channel launched in 1997. It is the fifth national terrestrial channel in the United Kingdom and is owned by Channel 5 Broadcasting Limited, a wholly-owned subsidiary of American media conglomerate Paramount Global, which is grouped under Paramount Networks UK & Australia division. During ownership by the RTL Group, it was branded as Five between 16 September 2002 and 13 February 2011. Richard Desmond purchased the channel from RTL on 23 July 2010, announcing plans to invest more money in programming and return to the name Channel 5 with immediate effect, and it was relaunched on 14 February 2011. On 1 May 2014 the channel was acquired by Viacom (now Paramount Global) for £450 million (US$759 million). Channel 5 is a general entertainment channel that shows both internally commissioned programmes such as '' Our Yorkshire Farm'', ''The Gadget Show'', ''The Hotel Inspector'', and ''Can't Pay? We'll Take It A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulstein Group
Ulstein Group is a group of companies that focus on various marine-related industries, but is mainly known for its shipbuilding and ship design activities. The largest unit is ''Ulstein Verft AS''. The company's head office and primary operations are located in the town of Ulsteinvik in the municipality of Ulstein in Møre og Romsdal county, Norway, an important area for the Norwegian maritime cluster, and with subsidiaries in several other countries. The group also includes companies working with power & control systems and solutions, engineering, site follow-up and aftermarket services. The company has also been engaged in shipping. History The original company, ''Ulstein Mekaniske Verksted'', was established in 1917 by Martin Ulstein and his brother-in-law Andreas Flø. At age 23, Martin and Andreas founded the company to modify local fishing boats, which were undergoing a global transition from sail-power to motorization. Martin Ulstein borrowed money from Ulstein Sparebank, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow (ship)
The bow () is the forward part of the hull of a ship or boat, the point that is usually most forward when the vessel is underway. The aft end of the boat is the stern. Prow may be used as a synonym for bow or it may mean the forward-most part of the bow above the waterline. Function A ship's bow should be designed to enable the hull to pass efficiently through the water. Bow shapes vary according to the speed of the boat, the seas or waterways being navigated, and the vessel's function. Where sea conditions are likely to promote pitching, it is useful if the bow provides reserve buoyancy; a flared bow (a raked stem with flared topsides) is ideal to reduce the amount of water shipped over the bow. Ideally, the bow should reduce the resistance and should be tall enough to prevent water from regularly washing over the top of it. Large commercial barges on inland waterways rarely meet big waves and may have remarkably little freeboard at the bow, whereas fast military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tumblehome
Tumblehome is a term describing a hull which grows narrower above the waterline than its beam. The opposite of tumblehome is flare. A small amount of tumblehome is normal in many naval architecture designs in order to allow any small projections at deck level to clear wharves. The term is also applied to automobile design, where a vehicle's sides taper inward as they go up. This includes a roof tapering in, and curved window glass. Origins Tumblehome was common on wooden warships for centuries. It allowed for maximizing a vessel's beam and creating a low center of gravity (by decreasing mass above the waterline), both tending to maximize stability. In the era of oared combat ships it was quite common, placing the oar ports as far abeam as possible, allowing maximum possible manpower to be brought to bear. Inward-sloping sides made it more difficult to board by a vessel by force, as the ships would come to contact at their widest points, with the decks some distance apart. W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luxury Motor Yacht
A superyacht or megayacht is a large and luxurious pleasure vessel. There are no official or agreed upon definitions for such yachts, but these terms are regularly used to describe professionally crewed motor or sailing yachts, ranging from to more than in length, and sometimes include yachts as small as . Superyachts are often available for charter with a staff that caters to guests at a high standard of comfort. They may be designed to emphasize comfort, speed, or expedition capability. Depending on the season, superyachts may be most frequently found in the Mediterranean or the Caribbean. Many are available for charter at prices that exceed 100,000 per week. Larger examples may have more than one swimming pool; they may carry a variety of water toys, other boats, and some a helicopter. History At the beginning of the 20th century, when wealthy individuals constructed large private yachts for personal pleasure, some manufacturers, such as Cox & King and Charles L. Seab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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