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Castle Class Naval Trawler
The Castle-class minesweeper was a highly seaworthy naval trawler adapted for patrol, anti-submarine warfare and minesweeping duties and built to Admiralty specifications. Altogether 197 were built in the United Kingdom between 1916 and 1919, with others built in Canada, India and later New Zealand. Many saw service in the Second World War. First World War The Castle class originated with the commercial trawler ''Raglan Castle'' of 1915, taken up for Royal Navy service. The design was adapted by Smith's Dock Company Ltd to Admiralty requirements for building in quantity. During World War I, 145 were built in the United Kingdom for the Admiralty. The names of the vessels were derived from the official crew rosters of ships at the Battle of Trafalgar. Non-standard ships included in the class varied between and , with dimensions varying between length and beam. The first standard vessel, ''Nathaniel Cole'', was delivered in May 1917. After the war 52 further ships on order ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minesweeper
A minesweeper is a small warship designed to remove or detonate naval mines. Using various mechanisms intended to counter the threat posed by naval mines, minesweepers keep waterways clear for safe shipping. History The earliest known usage of the naval mine dates to the Ming dynasty.Needham, Volume 5, Part 7, 203–205. Dedicated minesweepers, however, only appeared many centuries later during the Crimean War, when they were deployed by the British. The Crimean War minesweepers were rowboats trailing Grappling hook, grapnels to snag mines. Minesweeping technology picked up in the Russo-Japanese War, using aging torpedo boats as minesweepers. In Britain, naval leaders recognized before the outbreak of World War I that the development of sea mines was a threat to the nation's shipping and began efforts to counter the threat. Sir Arthur Wilson, 3rd Baronet, Sir Arthur Wilson noted the real threat of the time was a blockade aided by mines and not an invasion. The function of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early Middle Ages, medieval period, the first major maritime engagements were fought in the Hundred Years' War against Kingdom of France, France. The modern Royal Navy traces its origins to the English Navy of the early 16th century; the oldest of the British Armed Forces, UK's armed services, it is consequently known as the Senior Service. From the early 18th century until the World War II, Second World War, it was the world's most powerful navy. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danlayer
A danlayer was a type of vessel assigned to minesweeping flotillas during and immediately after World War II. They were usually small trawlers, fitted for the purpose of laying dans. A dan is a marker buoy which consists of a long pole moored to the seabed and fitted to float vertically, usually with a coded flag at the top. Dan laying was an important part of minesweeping, and boats were fitted specifically for this purpose. The task of a danlayer was to follow the minesweepers as they worked an area, and lay the dans which defined the area swept and made it obvious where the clear channels were. This would also help the minesweepers cover areas accurately without gaps and unnecessary overlaps.McDougall RJ, ''New Zealand Naval Vessels'', p. 55. Wellington, NZ: Government Printing Office, 1989. A danlayer worked with a minesweeper flotilla when large areas of sea were to be swept. List of danlayers Germany Since Germany had been an exponent of mine warfare since the 1920s, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Net Laying Ship
300px, , an American net laying ship that worked at Pearl Harbor in the 1940s A net laying ship, also known as a net layer, net tender, gate ship or boom defence vessel was a type of naval auxiliary ship. A net layer's primary function was to lay and maintain steel anti-submarine nets or anti torpedo nets. Nets could be laid around an individual ship at anchor, or harbor entrances or dry docks, or other anchorages. Net laying was potentially dangerous work, and net laying seamen were experts at dealing with blocks, tackles, knots and splicing. As World War II progressed, net layers were pressed into a variety of additional roles including salvage, troop and cargo transport, buoy maintenance, and service as tugboats. US Navy 1930s War Plan Orange, the pre-World War II US plan for war with Japan, anticipated that Pearl Harbor would be too small for the US Navy fleet that would be amassed in Hawaii. Orange anticipated the construction of a large anchorage in Lahaina Roads be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Requisitioned Trawlers Of The Royal Navy (WWII)
This is a list of civilian trawlers requisitioned by the Royal Navy for use in World War II. HMT stands for "His Majesty's Trawler". Requisitioned trawlers, whalers and drifters; A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References {{reflist External links Naval Trawlers Naval trawlers of the United Kingdom, World War II, requisitioned Lists of World War II ships, Trawlers, requisitioned Lists of Royal Navy ships, Trawlers, World War II, requisitioned United Kingdom in World War II-related lists, Trawlers, requisitioned Trawlers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Navy
The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 million tons in 2021. It has the world's largest aircraft carrier fleet, with List of aircraft carriers in service, eleven in service, one undergoing trials, two new carriers under construction, and six other carriers planned as of 2024. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the U.S. Navy is the third largest of the United States military service branches in terms of personnel. It has 299 deployable combat vessels and about 4,012 operational aircraft as of 18 July 2023. The U.S. Navy is one of six United States Armed Forces, armed forces of the United States and one of eight uniformed services of the United States. The United States Navy traces its origins to the Continental Navy, which was established during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Canada
Atlantic Canada, also called the Atlantic provinces (), is the list of regions of Canada, region of Eastern Canada comprising four provinces: New Brunswick, Newfoundland and Labrador, Nova Scotia, and Prince Edward Island. As of 2021, the landmass of the four Atlantic provinces was approximately , and had a population of over 2.4 million people. The term ''Atlantic Canada'' was popularized following the admission of Newfoundland as a Canadian province in 1949. The province of Newfoundland and Labrador is not included in the Maritimes, another significant regional term, but ''is'' included in Atlantic Canada. History The Atlantic Provinces are the historical territories of the Mi'kmaq, Naskapi, Beothuk and Nunatsiavut peoples. The people of Nunatsiavut are the Labrador Inuit (Labradormiut), who are descended from the Thule people. Exploration and settlement Leif Erikson and other members of his family began exploring the North American coast in 986 CE. Leif landed in three pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Canadian Navy
The Royal Canadian Navy (RCN; , ''MRC'') is the Navy, naval force of Canada. The navy is one of three environmental commands within the Canadian Armed Forces. As of February 2024, the RCN operates 12 s, 12 s, 4 s, 4 s, 8 s, and several auxiliary vessels. The RCN consists of 8,400 Regular Force and 4,100 Primary Reserve sailors, supported by 3,800 civilians. Vice-Admiral Angus Topshee is the commander of the Royal Canadian Navy and chief of the Naval Staff. Origins of the Royal Canadian Navy, Founded in 1910 as the Naval Service of Canada () and given royal sanction on 29 August 1911, the RCN was amalgamated with the Royal Canadian Air Force and the Canadian Army to form the Unification of the Canadian Forces, unified Canadian Armed Forces in 1968, after which it was known as Maritime Command () until 2011. In 2011, its historical title of "Royal Canadian Navy" was restored. The RCN has served in the First World War, First and Second World Wars, the Korean War, the Gulf War, Pers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TR Series Minesweeping Trawler
The TR series were minesweeping naval trawlers built during World War I. Ordered by the Royal Navy, they were loaned to the Royal Canadian Navy for seaward defence of the East Coast of Canada. The total number of vessels that entered service is unknown with 60 hulls constructed by eight Canadian shipyards. Based on the British , some entered service with the United States Navy during the war. Following World War I, they were sold for commercial use to replace the fishing vessels lost during the war. In World War II many of them were taken over by the Royal Navy as auxiliary minesweepers and two of them returned to the Royal Canadian Navy. Design and description The TR series of minesweeping naval trawler were copies of the Royal Navy's .Macpherson and Barrie, p. 26 There were some changes in the Canadian version, including the gun being mounted further forward and a different lighting system. The TR series had a displacement of with a length overall of and a length between perpen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fishing Vessel
A fishing vessel is a boat or ship used to fishing, catch fish and other valuable nektonic aquatic animals (e.g. shrimps/prawns, krills, coleoids, etc.) in the sea, lake or river. Humans have used different kinds of surface vessels in commercial fishing, commercial, artisan fishing, artisanal and recreational fishing. Prior to the 1950s there was little standardisation of fishing boats. Designs could vary between localities and even different boatyards. Traditional fishing boats were built of wood, which is not often used nowadays because of higher maintenance costs and lower durability. Fibreglass is used increasingly in smaller fishing vessels up to 25 metres (100-tonne displacement), while steel is usually used on vessels above 25 metres. It is difficult to estimate the number of recreational boat fishing, recreational fishing boats. They range in size from small dinghies, sailboats and motorboats to large superyachts and chartered cruiseliners. Unlike commercial fishing vess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
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 sides 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 cora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
