Thresher may refer to:
A threshing machine or a thresher is a piece of farm equipment that threshes grain, that is, it removes the seeds from the stalks and husks. It does so by beating the plant to make the seeds fall out.
A grain is a small, hard, dry seed, with or without an attached hull or fruit layer, harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and legumes.
Thresher sharks are large lamniform sharks of the family Alopiidae found in all temperate and tropical oceans of the world; the family contains three extant species, all within the genus Alopias.
A scythe is an agricultural hand tool for mowing grass or reaping crops. It has largely been replaced by horse-drawn and then tractor machinery, but is still used in some areas of Europe and Asia.
USS Thresher has been the name of more than one United States Navy ship, and may refer to:
First Quench Retailing was the largest independent off-licence retail chain in the UK, with around 1,300 shops operating under several retail brands, though all have now been closed. At the time of First Quench's closure, these included the Threshers, Haddows, The Local and Wine Rack chains.
The Clearwater Threshers are a minor league baseball team that currently plays in the Florida State League. Since 2009, the team competes in the North Division.
A secret society is a club or an organization whose activities, events, inner functioning, or membership are concealed from non-members. The society may or may not attempt to conceal its existence. The term usually excludes covert groups, such as intelligence agencies or guerrilla warfare insurgencies, that hide their activities and memberships but maintain a public presence.
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The Benjamin Franklin-class submarine was a group of US ballistic missile submarines that were in Navy service from the 1960s–2000s. The class was an evolutionary development from the earlier James Madison class of fleet ballistic missile submarine. Having quieter machinery and other improvements, it is considered a separate class. A subset of this class is the re-engineered 640 class starting with USS George C. Marshall (SSBN-654) The primary difference was that they were built under the new SUBSAFE rules after the loss of the USS Thresher, earlier boats of the class had to be retrofitted to meet SUBSAFE requirements. The Benjamin Franklin class, together with the George Washington, Ethan Allen, Lafayette, and James Madison classes, composed the "41 for Freedom" that was the Navy's primary contribution to the nuclear deterrent force through the late 1980s. This class and the James Madison class are combined with the Lafayettes in some references.
A submarine is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. It is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as "boats" rather than "ships" irrespective of their size.
United States naval reactors are nuclear reactors used by the United States Navy aboard certain ships to generate the steam used to produce power for propulsion, electric power, catapulting airplanes in aircraft carriers, and a few more minor uses. Such naval nuclear reactors have a complete power plant associated with them. All U.S. Navy submarines and supercarriers built since 1975 are nuclear-powered by such reactors. There are no commissioned conventional (non-nuclear) submarines or aircraft carriers left in the U.S. Navy, since the last conventional carrier, USS Kitty Hawk, was decommissioned in May 2009. The U.S. Navy had nine nuclear-powered cruisers with such reactors also, but they have since been decommissioned. Reactors are designed by a variety of contractors, then developed and tested at one of several government -owned and prime contractor-operated facilities. These facilities include Bettis Atomic Power Laboratory in West Mifflin, Pennsylvania and its associated Naval Reactors Facility in Idaho, and Knolls Atomic Power Laboratory in Niskayuna, New York and its associated Kesselring site in West Milton, New York, all under the management of the office of Naval Reactors. Sometimes there were full-scale nuclear-powered prototype plants built at the Naval Reactors Facility, Kesselring, and Windsor to test the nuclear plants, which were operated for years to train nuclear-qualified sailors.
The second USS Thresher (SSN-593) was the lead boat of her class of nuclear-powered attack submarines in the United States Navy. She was the U.S. Navy's second submarine to be named after the thresher shark.
USS Gato (SSN-615) was a Thresher/Permit-class nuclear submarine known as the "Goal Keeper" or the "Black Cat." She was the second United States Navy ship named after the gato, a species of small catshark found in waters along the west coast of Mexico.
An attack submarine or hunter-killer submarine is a submarine specifically designed for the purpose of attacking and sinking other submarines, surface combatants and merchant vessels. In the Soviet and Russian navies they were and are called "multi-purpose submarines". They are also used to protect friendly surface combatants and missile submarines. Some attack subs are also armed with cruise missiles mounted in vertical launch tubes, increasing the scope of their potential missions to include land targets.
USS Greenling (SSN-614), a Permit-class submarine, was the second ship of the United States Navy to be named for the greenling, an elongate, fine-scaled fish found from Kamchatka to California. Her keel was laid down on 15 August 1961 by the Electric Boat Company of Groton, Connecticut.
USS Scorpion (SSN-589) was a Skipjack-class nuclear powered submarine that served in the United States Navy and the sixth vessel of the U.S. Navy to carry that name.
The Permit-class submarine was a class of nuclear-powered fast attack submarines in service with the United States Navy from the early 1960s until 1996. They were a significant improvement on the Skipjack class, with greatly improved sonar, diving depth, and silencing. They were the forerunners of all subsequent US Navy SSN designs. They served from the 1960s all the way through to the early 1990s, where they were decommissioned due to age. They were followed by the Sturgeon and Los Angeles classes.
The Skipjack class was a class of United States Navy nuclear submarines (SSNs) that entered service in 1959-61. This class was named after its lead boat, USS Skipjack. The new class introduced the teardrop hull and the S5W reactor to U.S. nuclear submarines. The Skipjacks were the fastest U.S. nuclear submarines until the Los Angeles-class submarines, the first of which entered service in 1974.
A nuclear submarine is a submarine powered by a nuclear reactor. The performance advantages of nuclear submarines over "conventional" submarines are considerable. Nuclear propulsion, being completely independent of air, frees the submarine from the need to surface frequently, as is necessary for conventional submarines. The large amount of power generated by a nuclear reactor allows nuclear submarines to operate at high speed for long periods of time; and the long interval between refuelings grants a range virtually unlimited, making the only limits on voyage times being imposed by such factors as the need to restock food or other consumables.
USS Cavalla (SS/SSK/AGSS-244), a Gato-class submarine, was a ship of the United States Navy named for a salt water fish, best known for sinking the Japanese aircraft carrier Shōkaku.
A nuclear navy, or nuclear-powered navy, refers to the portion of a navy consisting of naval ships powered by nuclear marine propulsion. The concept was revolutionary for naval warfare when first proposed. Prior to nuclear power, submarines were powered by diesel engines and could only submerge through the use of batteries. In order for these submarines to run their diesel engines and charge their batteries they would have to surface or snorkel. The use of nuclear power allowed these submarines to become true submersibles and unlike their conventional counterparts, they became limited only by crew endurance and supplies.
Hammerhead may refer to:
A steam tractor is a vehicle powered by a steam engine which is used for pulling.
Permit may refer to:
Submarine Command is a 1951 American war film directed by John Farrow and starring William Holden, Don Taylor, Nancy Olson, William Bendix, and Darryl Hickman. It is notable for being one of the first films to touch on post traumatic stress disorder. Holden invested $20,000 of his own money into the film. The film was panned by critics for its brooding melodrama.
Threshing is a key part of agriculture that involves removing the seeds or grain from plants from the plant stalk. In the case of small farms, threshing is done by beating or crushing the grain by hand or foot, and requires a large amount of hard physical labour. A simple thresher with a crank can be used to make this work much easier for the farmer. In most cases it takes two people to work these: one person to turn the crank and the other to feed the grain through the machine. These threshers can be built using simple materials and can improve the efficiency of grain threshing. They can also be built with pedals, or be attached to a bicycle, so that the person operating it can simply pedal to reduce the work even more and make threshing faster.