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Skipjack EPA
Skipjack may refer to: Zoology * Skipjack tuna, a fish of the family ''Scombridae'' * A common name for Elateridae (click beetles) * Skipjack shad, the fish species, ''Alosa chrysochloris'' * Common name for ''Pseudocaranx georgianus'', also known as silver trevally or skippy. Maritime * Skipjack 15, an American sailing dinghy design * HMS ''Skipjack'', Royal Navy, Halcyon class minesweeper, sunk by bombs in 1940 * Skipjack (boat), a type of fishing boat used on the Chesapeake Bay, USA * USS ''Skipjack'', the name of three United States Navy submarines * ''Skipjack'' class submarine, a class of United States Navy nuclear submarines In computing * Skipjack (cipher), a block cipher, designed by the US National Security Agency * Skipjack, the code name for Linspire 6.0, a Linux distribution * Skipjack, the code name for the VAX 8550 computer system, introduced by Digital Equipment Corporation in 1986 Other * Baltimore Skipjacks, former professional ice hockey team * Skipjack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack Tuna
The skipjack tuna (''Katsuwonus pelamis'') is a medium-sized perciform fish in the tuna family, Scombridae. It is otherwise known as the balaya (Sri Lanka), bakulan/kayu (North Borneo), tongkol/aya (Malay Peninsula/Indonesia), aku (Hawaii), cakalang (Indonesia), katsuo, arctic bonito, mushmouth, oceanic bonito, striped tuna or victor fish. It grows up to 1 m (3 ft) in length. It is a cosmopolitan pelagic fish found in tropical and warm-temperate waters. It is a very important species for fisheries. Description It is a streamlined, fast-swimming pelagic fish, common in tropical waters throughout the world, where it inhabits surface waters in large shoals (up to 50,000 fish), feeding on fish, crustaceans, cephalopods, and mollusks. It is an important prey species for sharks and large pelagic fishes and is often used as live bait when fishing for marlin. It has no scales, except on the lateral line and the corselet (a band of large, thick scales forming a circle around th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elateridae
Elateridae or click beetles (or "typical click beetles" to distinguish them from the related families Cerophytidae and Eucnemidae, which are also capable of clicking) are a family of beetles. Other names include elaters, snapping beetles, spring beetles or skipjacks. This family was defined by William Elford Leach (1790–1836) in 1815. They are a cosmopolitan beetle family characterized by the unusual click mechanism they possess. There are a few other families of Elateroidea in which a few members have the same mechanism, but most elaterid subfamilies can click. A spine on the prosternum can be snapped into a corresponding notch on the mesosternum, producing a violent "click" that can bounce the beetle into the air. Clicking is mainly used to avoid predation, although it is also useful when the beetle is on its back and needs to right itself. There are about 9300 known species worldwide, and 965 valid species in North America. Etymology Leach took the family name from the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack Shad
The skipjack herring (''Alosa chrysochloris'') is a North American, migratory, fresh- and brackish water fish species in the herring family Clupeidae. The name skipjack shad comes from the fact that it is commonly seen leaping out of the water while feeding. Other common names include blue herring, golden shad, river shad, Tennessee tarpon, and McKinley shad. The skipjack shad is restricted to the Gulf of Mexico drainage basins. Skipjack are found in clear to moderately turbid water in areas with flow. Because they are a migratory species, dams often impede their reproduction. Records suggest that this species was much more abundant in the Upper Mississippi River basin before it was impounded. Currently, skipjack is most abundant in the Upper Mississippi River below the mouth of the Ohio River. They are known as an "early-run" species as they migrate to spawn in the early spring. Distribution Currently skipjack herring are restricted to the Gulf of Mexico and its drainage, in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudocaranx Georgianus
Silver trevally, ''Pseudocaranx georgianus'', (also known as skippy, skipjack trevally and silver bream) is a jack of the family Carangidae found around the coast of Australia and New Zealand. Description The fish can grow to a length of and weigh up to . More typically, it has a length of and a weight of . The species can live as long as 25 years. They have compressed and elongated bodies, the upper portion is a bluish-silver colour, the belly is silver, and the sides are a yellow-silver shade. A small black blotch is found on the bony flap covering the gills. The fish have two dorsal fins, two small, detached spines in front of the rear fin, and a deeply forked tail fin. Between two and four years of age, the silver trevally becomes sexually mature and is able to reproduce. Spawning happens in estuaries and deeper waters between spring and autumn over an extended period; the females can produce between 50,000 and 200.000 eggs over the course of a season. Taxonomy The specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack 15
The Skipjack 15 is an American sailing dinghy that was designed by Harry R. Sindle and Carter Pyle and first built in 1965.Sherwood, Richard M.: ''A Field Guide to Sailboats of North America, Second Edition'', pages 46-47. Houghton Mifflin Company, 1994. The Skipjack 15 design was developed into the Surprise 15 in 1969. Production The design was initially built by Newport Boats in California, United States starting in 1965. After 1970 the rights were purchased by New Design Sailboats of Benbrook, Texas and that company built several hundred examples before production ended. A total of 800 boats were completed. Design The Skipjack 15 is a recreational sailboat, built predominantly of fiberglass. It has a fractional sloop rig with aluminum spars. The mainsail is a full roach design, which is fully battened and there is a bar-style mainsheet traveler. The hull has a spooned plumb stem, a vertical transom, a transom-hung rudder controlled by a tiller and a retractable a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halcyon Class Minesweeper
The ''Halcyon'' class was a class of 21 oil-fired minesweepers (officially, "fleet minesweeping sloops") built for the British Royal Navy between 1933 and 1939. They were given traditional small ship names used historically by the Royal Navy and served during World War II. Design There were 21 ships in the ''Halcyon'' class, built in two groups; the first using reciprocating steam engines, with steam turbines in the latter. They were generally smaller versions of the escort sloops. ''Niger'' and ''Salamander'' of the reciprocating group used vertical triple expansion engines, instead of the vertical compound engines of their sisters. As a result of the increased installed power they had a half knot speed advantage, even though they used slightly shorter hulls. The turbine ships used the same shorter hulls as ''Niger'' and ''Salamander'', but with lower installed power, speed dropped back to . ''Gleaner'', ''Franklin'', ''Jason'' and ''Scott'' were completed as unarmed sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack (boat)
The skipjack is a traditional fishing boat used on the Chesapeake Bay for oyster dredging. It is a sailboat which succeeded the bugeye as the chief oystering boat on the bay, and it remains in service due to laws restricting the use of powerboats in the Maryland state oyster fishery. Design and construction The skipjack is sloop-rigged, with a sharply raked mast and extremely long boom (typically the same length as the deck of the boat). The mainsail is ordinarily triangular, though gaff rigged examples were built. The jib is self-tending and mounted on a bowsprit. This sail plan affords the power needed to pull the dredge, particularly in light winds, while at the same time minimizing the crew required to handle the boat. The hull is wooden and V-shaped, with a hard chine and a square stern. In order to provide a stable platform when dredging, skipjacks have very low freeboard and a wide beam (averaging one third the length on deck). A centerboard is mounted in lieu of a kee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Skipjack
USS ''Skipjack'' has been the name of more than one United States Navy ship named after the skipjack tuna The skipjack tuna (''Katsuwonus pelamis'') is a medium-sized perciform fish in the tuna family, Scombridae. It is otherwise known as the balaya (Sri Lanka), bakulan/kayu (North Borneo), tongkol/aya (Malay Peninsula/Indonesia), aku (Hawaii), cakal ..., and may refer to: *USS ''Skipjack'' (Submarine No. 24), the original name of a submarine renamed while under construction in 1911 and in commission from 1912 to 1921 *, a submarine in commission from 1938 to 1946 *, a submarine in commission from 1959 to 1990 {{DEFAULTSORT:Skipjack United States Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack-class Submarine
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, . The new class introduced the teardrop hull and the S5W reactor to U.S. nuclear submarines. The ''Skipjack''s were the fastest U.S. nuclear submarines until the s, the first of which entered service in 1974. Design The ''Skipjack''s' design (project SCB 154)Friedman, pp. 258 was based on the USS ''Albacore'''s high-speed hull design. The hull and innovative internal arrangement were similar to the diesel-powered ''Barbel'' class that were built concurrently. The design of the ''Skipjack''s was very different from the s that preceded the ''Skipjack''s. Unlike the ''Skate''s, this new design was maximized for underwater speed by fully streamlining the hull like a blimp. This required a single screw aft of the rudders and stern planes. Adoption of a single screw was a matter of considerable debate and analysis within th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack (cipher)
In cryptography, Skipjack is a block cipher—an algorithm for encryption—developed by the U.S. National Security Agency (NSA). Initially classified, it was originally intended for use in the controversial Clipper chip. Subsequently, the algorithm was declassified. History of Skipjack Skipjack was proposed as the encryption algorithm in a US government-sponsored scheme of key escrow, and the cipher was provided for use in the Clipper chip, implemented in tamperproof hardware. Skipjack is used only for encryption; the key escrow is achieved through the use of a separate mechanism known as the Law Enforcement Access Field (LEAF). The algorithm was initially secret, and was regarded with considerable suspicion by many for that reason. It was declassified on 24 June 1998, shortly after its basic design principle had been discovered independently by the public cryptography community. To ensure public confidence in the algorithm, several academic researchers from outside the gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linspire
Linspire (formerly Lindows) is a commercial operating system based on Debian and Ubuntu and currently owned by PC/OpenSystems LLC. It had been owned by Linspire. Inc. from 2001 to 2008, and then by Xandros from 2008 to 2017. On July 1, 2008, Linspire stockholders elected to change the company's name to Digital Cornerstone, and all assets were acquired by Xandros. On August 8, 2008, Andreas Typaldos, CEO of Xandros, announced that Linspire would be discontinued in favor of Xandros; Freespire would change its base code from Ubuntu to Debian; and the Linspire brand would cease to exist. On January 1, 2018, it was announced that PC/OpenSystems LLC had purchased Linspire and Freespire from Xandros, and that Linspire 7 was available for $79.99, while Freespire 3 was available for free. History Based in San Diego, California, Lindows, Inc. was incorporated in July 2001 by Michael Robertson and began selling products in January 2002. Robertson's goal was to develop a Linux-based ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VAX 8800
The VAX 8000 is a discontinued family of superminicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA). The 8000 series was introduced in October 1984 with the 8600, taking over the high-end of the VAX lineup. Originally known as the 11/790, it offers performance roughly double that of the earlier 11/780. It was succeeded by the 8650 (formerly the 11/795) in December 1985. January 1986 saw the introduction of the 8200 and 8300 families in the mid-range. The 8800 replaced the 8600s at the high end in 1987, with the 8700 and 8500 being lower-performance versions of these systems. DEC also offered various clusters of these machines with a variety of model numbers. As with other VAX systems, they were sold with either the VMS or Ultrix operating systems. It was intended that the 8800 was to have been replaced by the VAX 9000 on the high end, but the VAX 6000, originally a mid-range model re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
