"Seine fishing Seine ( ) fishing (or seine-haul fishing) is a method of fishing that employs a fishing net called a seine, that hangs vertically in the water with its bottom edge held down by weights and its top edge buoyed by floats. Seine nets can be deployed from the shore as a beach seine, or from a boat. Boats deploying seine nets are known as seiners. Two main types of seine net are deployed from seiners: ""purse seines"" and ""Danish seines"". The word ""seine"" has origins in the Old French ""seigne"", the Latin ""sagena"", and the Greek σαγήνη ""sagēnē"""
"is similar to a traditional style purse, which has a drawstring. The purse seine is a preferred technique for capturing fish species which school, or aggregate, close to the surface: sardines, mackerel, anchovies, herring, and certain species of tuna (schooling); and salmon soon before they swim up rivers and streams to spawn (aggregation). Boats equipped with purse seines are called purse seiners. Purse seine fishing can be a relatively sustainable [?] way of fishing, as it can result in smaller amounts of by-catch (unintentionally caught fish), especially when used to catch large species of fish (like herring or mackerel) that"
"purse seine itself is usually black in color, with colorful ""corks"" (floats of some sort) strung along the cork line, and lead weights strung along the lead line. The size and attributes of purse seines are regulated by the Alaska Department of Fish and Game, which oversees the industry. A typical length may be long, by deep (distance between cork line and lead line). It is stacked on the stern of the fishing boat with the corkline coiled on the port side, and the lead line coiled on the starboard side, with the web taking up the middle. The seine,"
"is a mechanized pulley used on some seiners to haul in the nets. According to the UN Food and Agriculture Organization, no single invention has contributed more to the success of purse seine net hauling than the power block. The Puretic power block line was introduced in the 1950s and was the key factor in the mechanization of purse seining. The combination of these blocks with advances in fluid hydraulics and the new large synthetic nets changed the character of purse seine fishing. The original Puretic power block was driven by an endless rope from the warping head of a"
"Seine nets are also well documented in ancient cultures in the Mediterranean region. They appear in Egyptian tomb paintings from 3000 BC. In ancient Roman literature, the poet Ovid makes many references to seine nets, including the use of cork floats and lead weights. A common type of seine is a purse seine, named such because along the bottom are a number of rings. A line (referred to as a purse-line) passes through all the rings, and when pulled, draws the rings close to one another, preventing the fish from ""sounding"", or swimming down to escape the net. This operation"
"Drift pin In metalworking, a drift pin, drift pin punch, slave pin, simply drift, or even pokey bit is the name for a tool used for enlarging holes, or aligning holes prior to bolting or riveting metal parts together. A drift pin is not used as a punch in the traditional sense of the term. A drift is constructed as a tapered rod, with the hammer acting on the large end of the taper. The tapered end of a drift punch is placed into the semi-aligned bolt holes of two separate components, and then driven into the hole. As it"
"Drift diving Drift diving is a type of scuba diving where the diver is transported by the water movement caused by the tide, an ocean current or in a river. The choice whether to drift dive depends on the purpose of the dive, and whether there is an option. At some sites there is almost always a current running, and at others the strength and direction of water movement may vary with the tide, or other driving forces, like wind or recent rainfall. At some sites there may be considerable variation in visibility and marine life activity based on the"
"Drift ice Drift ice, also called brash ice, is any sea ice other than fast ice, the latter being attached (""fastened"") to the shoreline or other fixed objects (shoals, grounded icebergs, etc.). Drift ice is carried along by winds and sea currents, hence its name. When drift ice is driven together into a large single mass (>70% coverage), it is called pack ice. Wind and currents can pile up that ice to form ridges up to several metres in height. These represent a challenge for icebreakers and offshore structures operating in cold oceans and seas. Drift ice consists of ice"
"primarily used on the shore near the bank of a stream or a shallow area of a lake or pond. A seine is a large net, sometimes being in size, which has small weights attached to the bottom. These small weights help to keep the net vertical in the water while two people hold either end of the net and drag it through a spot where minnows are suspected to be. This method is good for catching a variety of bait fish and is one of the oldest methods for catching fish. A wire trap is made of two half-cylinders"
"instance) or vein of ore. A drift may or may not intersect the ground surface. A drift follows the vein, as distinguished from a crosscut that intersects it, or a level or gallery, which may do either. All horizontal or subhorizontal development openings made in a mine have the generic name of drift. These are simply tunnels made in the rock, with a size and shape depending on their use—for example, haulage, ventilation, or exploration. This section provides a very abbreviated snapshot of the drift mining information generally available. Argyle Lake State Park's website says the Argyle Hollow (occupied by"
"in that region. The drum seine uses a horizontally mounted drum to haul and store the net instead of a power block. The net is pulled in over a roller, which spans the stern, and then passes through a spooling gear with upright rollers. The spooling gear is moved from side to side across the stern which allows the net to be guided and wound tightly on the drum. There are several advantages to the drum seine over the power block. The net can be hauled very quickly - at more than twice the speed of using a power block,"
"Bay- Drift Net, Seine Fishing in addition to the ""Hookers"" who used many hooks and a Long Line trailed from the boat. Drift Fishing, the most common and widespread took place in all seasons as well as at night time when boats from Newlyn, Mousehole, Porthleven and a small number from the smaller fisheries including Mullion would all run out long nets from their boats buoyed by a series of hand made cork buoys in search of Pilchards, Herring and Mackerel. The Hook and Line Boats were run by smaller concerns, older fishermen and Pilots who need to stay closer"
"or is trans-shipped to carrier vessels to freight to the canneries, leaving the purse seine vessel close to the fishing grounds to continue fishing. Purse seiners longer than 70 metres are called super seiners. A factory squid jigger is a specialized ship that uses powerful lights to attract squid and then ""jigs"" many thousands of hooked lures from hundreds of separate winches. These predominantly Japanese and Korean factory vessels and their crews may fish the oceans continuously for two years, periodically transferring their catch at the fishing grounds to larger refrigerated vessels. Some barges are floating fish processing factories, which"
"purse seine net hauling"" than the power block, which was ""the linch-pin in the mechanization of purse seining"". The power block was invented by a Croatian fisherman, Mario Puratić, and patented in 1953. In English, Puratić is usually spelt Puretic, sometimes Puretich. While he was working as a tuna and sardine fisherman from San Pedro, California, Puratić started thinking about the difficulty of hauling seine nets. The original power block he designed was essentially a simple winch which used a V-shaped roller coated with hard rubber. It was suspended from a davit, and powered from the warp end of the"
"Rute (music) The rute (also spelled ruthe, from the German for 'rod' or 'switch'), also known as a multi-rod, is a beater for drums. Commercially made rutes are usually made of a bundle of thin birch dowels or thin canes attached to a drumstick handle. These often have a movable band to adjust how tightly the dowels are bound toward the tip. A rute may also be made of a bundle of twigs attached to a drumstick handle. These types of rutes are used for a variety of effects with various musical ensembles. A rute may also be a cylindrical"
"Modern tuna seiners have a capacity up to , reach speeds of over , and carry multiple spotting helicopters. Purse seining for yellowfin tuna became highly controversial in the late 1970s when it became apparent that the eastern Pacific fishery was killing many spinner dolphins, pantropical spotted dolphins, and other cetaceans (often called ""porpoises"" by the tuna fleet) that accompany the fish. This association has been long-recognized by commercial tuna fishermen. Since the introduction of ""dolphin-friendly"" labeling, an increasing number of purse seine sets are now made on ""free schools"" unassociated with dolphins, as well as schools that associate with"
"Zeese A Zeese (, pl. ""Zeesen"") is a traditional type of fishing gear used for bottom trawling in the shallow coastal waters (""Bodden"") of Pomerania. Depending on the type of the Zeese, it is drawn by one or two boats (""Zees(en)boot"" or ""Tuckern"", respectively). ""Zeese"" is one of the few words which remained in use after the medieval replacement of West Slavic dialects with Low German ones in northeastern Germany. According to Bielfeldt, it derives from Pomeranian ""seza"", which in turn has its roots in Slavic ""*sěděti"", meaning ""sit."" The Zeese trawls used in the late 20th century were about"
"called ""skates"", each consisting of several hundred fathoms of groundline, with gangions and hooks attached. A ""tuck seine"" or ""tuck net"" about 70 fathoms long (), and very deep in the middle, was used to take fish from a larger seine. A ""line"" attached to a whaling harpoon was about 150 fathoms long (). A ""forerunner"" — a piece of cloth tied on a ship's log line some fathoms from the outboard end — marked the limit of drift line. A ""kite"" was a drag, towed under water at any depth up to about 40 fathoms, which upon striking bottom,"
"there are no otter boards. The seine boat drags the warps and the net in a circle around the fish. The motion of the warps herds the fish into the central net. Danish seiner vessels are usually larger than purse seiners, though they are often accompanied by a smaller vessel. The drag lines are often stored on drums or coiled onto the deck by a coiling machine. A brightly coloured buoy, anchored as a ""marker"", serves as a fixed point when hauling the seine. A power block, usually mounted on a boom or a slewing deck crane, hauls the seine"
"is driven in, the taper forces the two components into alignment, allowing for easy insertion of the fastener. Unlike most punches, force should never be applied to the tip of drift pin. Drift pins are especially useful for aligning fastener holes in structural steel members. Spud wrenches used for assembling trusses and steel beams have tapered handles to use as drift pins. Drift pin In metalworking, a drift pin, drift pin punch, slave pin, simply drift, or even pokey bit is the name for a tool used for enlarging holes, or aligning holes prior to bolting or riveting metal parts"
"one man with a small boat with hand-casting nets or a few pot traps, to a huge fleet of trawlers processing tons of fish every day. Commercial fishing gears in use today include surrounding nets (e.g. purse seine), seine nets (e.g. beach seine), trawls (e.g. bottom trawl), dredges, hooks and lines (e.g. long line and handline), lift nets, gillnets, entangling nets, Pole and Line, and traps Commercial fishing gear is specifically designed and updated to avoid catching certain species of animal that is unwanted or endangered. Billions of dollars are spent each year in researching/developing new techniques to reduce the"
"When you see a series of circular positions, they are all at speeds of below and reflect the drift of the current—there is no question, that vessel was purse seining, and the printout of the chart can be shown to the court to demonstrate the fact. Chile is currently the world’s largest producer of farmed salmon and has a burgeoning mussel culture industry that is supplying a growing world market. Other fisheries of interest include alfonsino, anchovies, cod, cuttlefish, hake, mackerel, ray, sardines, sea bream, squid, and swordfish. The system is also used to monitor foreign vessels entering and leaving"
"The Zeese is always on the luff side, since the trawler draws the net by drifting sidewards under full sail. The reddish color of most Zeesenboot sails derives from their traditional treatment with oak bark, to protect them against fungal infestation; to preserve their traditional look, this typical color is applied also to Zeesenboot sails made of modern materials. Zeese A Zeese (, pl. ""Zeesen"") is a traditional type of fishing gear used for bottom trawling in the shallow coastal waters (""Bodden"") of Pomerania. Depending on the type of the Zeese, it is drawn by one or two boats (""Zees(en)boot"""
"Drift mining Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam. Random House dictionary says the origin of the term ""drift mine"" is an Americanism, circa 1885–1890. Drift is a more general mining term, meaning a near-horizontal passageway in a mine, following the bed (of coal, for"
"Drifter drill A drifter drill or drifter is a hydraulic or pneumatic rock or ground drill used to make horizontal holes in tunnel construction and mining. It is mounted on a feed, which is like a rail that the drill travels on or drifts. This kind of drilling procedure is also called drifting. The feed is usually attached with a flexible boom (like an arm) to a stationary or mobile unit that contains the powerpack (engine and hydraulic pump or compressor). Drifters are used in mining, construction, exploration, and natural science. It usually consists of a percussive system and a"
"to recover from small lesions, but larger and recurrent damage complicates recovery. Bottom dragging gear such as beach seines can damage corals by abrasion and fracturing. A beach seine is a long net about with a mesh size of and a weighted line to hold the net down while it is dragged across the substrate and is one of the most destructive types of fishing gear on Kenya’s reefs. Bottom trawling in deep oceans destroys cold–water and deep–sea corals. Historically, industrial fishers avoided coral because their nets would get caught on the reefs. In the 1980s, ""rock–hopper"" trawls attached large"
"the net does not require overhead handling, and the process is therefore safer. The most important advantage is that the drum system can be operated with fewer deckhands. However, it is illegal to use a seine drum in the state of Alaska. A Danish seine, also occasionally called an anchor seine, consists of a conical net with two long wings with a bag where the fish collect. Drag lines extend from the wings, and are long so they can surround an area. A Danish seine is similar to a small trawl net, but the wire warps are much longer and"
"seabirds. Nets combined in this way were first used in the Mediterranean. A drift net consists of one or more panels of webbing fastened together. They are left free to drift with the current, usually near the surface or not far below it. Floats on the floatline and weights on the groundline keep them vertical. Drift nets drift with the current while they are connected with the operating vessel, the driftnetter or drifter. Drift nets are usually used to catch schooling forage fish such as herring and sardines, and also larger pelagic fish such as tuna, salmon and pelagic squid."
"Lute A lute () is any plucked string instrument with a neck (either fretted or unfretted) and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. More specifically, the term ""lute"" can refer to an instrument from the family of European lutes. The term also refers generally to any string instrument having the strings running in a plane parallel to the sound table (in the Hornbostel–Sachs system). The strings are attached to pegs or posts at the end of the neck, which have some type of turning mechanism to enable the"
"the traditional grip for kit drumming. However the traditional grip has since made a comeback, and both types of grip are still used and promoted by leading kit drummers and teachers. Drum stick A drumstick is a type of percussion mallet used particularly for playing snare drum, drum kit and some other percussion instruments, and particularly for playing unpitched percussion. Specialized beaters used on some other percussion instruments, such as the metal beater or ""wand"" used with a triangle, and particularly beaters or ""mallets"" used with tuned percussion such as xylophone and timpani, are not normally referred to as ""drumsticks""."
"a piece of lead. A compass can measure and draw arc and circles on charts and maneuvering boards. Set and drift The term “set and drift” is used to describe external forces that affect a boat and keep it from following an intended course. To understand and calculate set and drift, one needs to first understand currents. Ocean currents are the horizontal movements of water from one location to another. The movement of water is impacted by: meteorological effects, wind, temperature differences and gravity and on occasion earthquakes. Set is referred to as the current’s direction, expressed in true degrees,"
"Puretic power block The Puretic power block is a special kind of mechanised winch used to haul nets on fishing vessels. The power block is a large powered aluminium pulley with a hard rubber-coated sheave. While many men were needed for the back-breaking work of hauling a purse seine manually, the same work could be done by fewer men with a power block. The Puretic power block revolutionized the technology of hauling fishing nets, particularly purse seine nets. According to the Food and Agriculture Organization of the United Nations (FAO), ""no single invention has contributed more to the success of"
"Chute (gravity) A chute is a vertical or inclined plane, channel, or passage through which objects are moved by means of gravity. A chute, also known as a race, flume, cat, or river canyon, is a steep-sided passage through which water flows rapidly. Akin to these, man-made chutes, such as the timber slide and log flume, were used in the logging industry to facilitate the downstream transportation of timber along rivers. These are no longer in common use. Man-made chutes may also be a feature of spillways on some dams. Some types of water supply and irrigation systems are gravity"