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Explorer Class General-purpose Vessel
The Explorer class was a two-ship class of general purpose vessels of the Royal Australian Navy that served between 1960 and 1995.Wilson, ''Royal Australian Navy 21st Century Warships'', p. 37 Design The Explorer class was a two-ship class of general purpose vessels built for the RAN.Gillett, ''Australian and New Zealand Warships since 1946'', p. 46 The ships had a displacement of 207 tons at standard load and 260 tons at full load. Each was long between perpendiculars and long overall, had a beam of , and a draught of . Propulsion machinery consisted of GM diesels, which supplied to the two propeller screws, and allowed the vessel to reach . The ship's company consisted of 14 personnel. The ship's armament of light weapons (usually .50 calibre machine guns) were only fitted as needed. The two vessel, and , were built by Walkers Limited of Maryborough, Queensland Maryborough ( ) is a city and a suburb in the Fraser Coast Region, Queensland, Australia. At the 2021 Cens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballast Point (New South Wales)
Ballast Point is a urban park located in Birchgrove at the tip of the Balmain Peninsula in the Inner West Council local government area in Sydney, New South Wales, Australia. The park is located adjacent to the point of the same name, situated between Snails Bay and Mort Bay in Sydney Harbour. History Between 1788 and 1800, the point was used as a fishing and hunting ground for European settlers and as a source of ballast for ships returning unladen to Europe, hence the name Ballast Point. In 1800 the point was part of a grant to colonial surgeon Dr William Balmain (1762–1803) made by Governor John Hunter. A year later, Balmain sold his entire holding to John Gilchrist for five shillings and the area then became known as Gilchrist's place. In 1833, Gilchrist transferred power of attorney to Frederick Parbury who, three years later, commissioned surveyor John Armstrong to lay out sub divisions. This survey formed the basis of sales between 1836 and 1841. Ballast Poin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walkers Limited
Walkers Limited was an Australian engineering company, based in Maryborough, Queensland. It built ships and railway locomotives. The Walkers factory still produces railway locomotives and rolling stock as part of Downer Rail. History In 1863 John Walker and three friends set up the ''Union Foundry'' of John Walker & Co in Ballarat. In 1867 a branch was opened in Maryborough. The Ballarat assets were disposed of in 1879 and in 1884, the business became a limited company under the title ''John Walker & Co Limited'', being renamed ''Walkers Limited'' in 1888. The company produced most of the parts for machinery at sugar mills. In 1980 Walkers Limited was sold to Evans Deakin Industries. It was included in the purchase of Evans Deakin by Downer Group in March 2001 and today the Maryborough factory continues to operate as part of Downer Rail. In 2003 Bundaberg Foundry Engineers completed the acquisition of the Walkers Sugar Business and moved to change the operating name t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maryborough, Queensland
Maryborough ( ) is a city and a suburb in the Fraser Coast Region, Queensland, Australia. At the 2021 Census, Maryborough had a population of 15,287. Geography Maryborough is located on the Mary River in Queensland, Australia, approximately north of the state capital, Brisbane. The city is served by the Bruce Highway. It is closely tied to its neighbour city Hervey Bay which is approximately northeast. Together they form part of the area known as the Fraser Coast. The neighbourhood of Baddow is within the west of the suburb near the Mary River. It takes its name from Baddow House, a historic property in the area (). Baddow railway station () and Baddow Island () in the Mary River also take their names from the house. History Original inhabitants, language and culture Evidence of human inhabitation of the Maryborough region stretches back to at least 6,000 years ago. The Gubbi Gubbi (Kabi Kabi) and Batjala (Butchulla) people were the original inhabitants of the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Australian Navy
The Royal Australian Navy (RAN) is the principal naval force of the Australian Defence Force (ADF). The professional head of the RAN is Chief of Navy (CN) Vice Admiral Mark Hammond AM, RAN. CN is also jointly responsible to the Minister of Defence (MINDEF) and the Chief of Defence Force (CDF). The Department of Defence as part of the Australian Public Service administers the ADF. Formed in 1901, as the Commonwealth Naval Forces (CNF), through the amalgamation of the colonial navies of Australia following the federation of Australia. Although it was originally intended for local defence, it became increasingly responsible for regional defence as the British Empire started to diminish its influence in the South Pacific. The Royal Australian Navy was initially a green-water navy, and where the Royal Navy provided a blue-water force to the Australian Squadron, which the Australian and New Zealand governments helped to fund, and that was assigned to the Australia Station. Thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p.5. This is accomplished by means of its "draft marks" (or "load lines"). A mer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Between Perpendiculars
Length between perpendiculars (often abbreviated as p/p, p.p., pp, LPP, LBP or Length BPP) is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member. When there is no sternpost, the centerline axis of the rudder stock is used as the aft end of the length between perpendiculars. Measuring to the stern post or rudder stock was believed to give a reasonable idea of the ship's carrying capacity, as it excluded the small, often unusable volume contained in her overhanging ends. On some types of vessels this is, for all practical purposes, a waterline measurement. In a ship with raked stems, naturally that length changes as the draught of the ship changes, therefore it is measured from a defined loaded condition. See also * Length overall __NOTOC__ Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured paral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Length Overall
__NOTOC__ Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth (for example, £2.50 per metre LOA). LOA is usually measured on the hull alone. For sailing ships, this may ''exclude'' the bowsprit and other fittings added to the hull. This is how some racing boats and tall ships use the term LOA. However, other sources may include bowsprits in LOA. Confusingly, LOA has different meanings. "Sparred length", "Total length including bowsprit", "Mooring length" and "LOA including bowsprit" are other expressions that might indicate the full length of a sailing ship. LOD Often used to distinguish between the length of a vessel including projections (e.g. bow sprits, etc.) from the length of the hull itself, the Length on Deck or LOD is often repor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (ship)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer extremities of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells designed for flatwater racing may have length to beam ratios as high as 30:1, while a cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draught (ship)
The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water. The more heavily a vessel is loaded, the deeper it sinks into the water, and the greater its draft. After construction, the shipyard creates a table showing how much water the vessel displaces based on its draft and the density of the water (salt or fresh). The draft can also be used to determine the weight of cargo on board by calculating the total displacement of water, accounting for the content of the ship's bunkers, and using Archimedes' principle. The closely related term "trim" is defined as the difference between the forward and aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrographic Survey
Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore oil exploration/offshore oil drilling and related activities. Strong emphasis is placed on soundings, shorelines, tides, currents, seabed and submerged obstructions that relate to the previously mentioned activities. The term ''hydrography'' is used synonymously to describe ''maritime cartography'', which in the final stages of the hydrographic process uses the raw data collected through hydrographic survey into information usable by the end user. Hydrography is collected under rules which vary depending on the acceptance authority. Traditionally conducted by ships with a sounding line or echo sounding, surveys are increasingly conducted with the aid of aircraft and sophisticated electronic sensor systems in shallow waters. Organizations National and International Maritime Hydrography Hydrographic offices evolved from n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Australian Navy Reserve
The Royal Australian Naval Reserve (RANR) is the volunteer reserve force of the Royal Australian Navy in Australia. The current Royal Australian Naval Reserve was formed in June 1973 by merging the former RANR (Seagoing) and the Royal Australian Naval Volunteer Reserve Royal Australian Naval Volunteer Reserve (RANVR) was a reserve force of the Royal Australian Navy. Formation In late 1920, the Navy Board proposed the creation of an Royal Australian Naval Volunteer Reserve scheme, with approaches made to yac .... External links A brief history of the Royal Australian Naval Reserve, from 1863 to the present day Accessed 9 April 2018. {{Royal Australian Navy Royal Australian Navy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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