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Deck TypeDecked vesselsOverviewIn general two types of jigger vessels are engaged in fisheries. Specialised squid jigger vessels working mostly in the southern hemisphere and smaller vessels using the jigging technology in the northern waters mainly for catching cod.Vessel ClassLengthall  (LOA) PowerallTonnageall  (GRT in register tons) Deck ArrangementOn squid jigger vessel the typical arrangements are the jigger winches placed at the rail around the vessel. The number of winches depends on the size of the vessel. There are single and double drum winches in use. Arrangements of strong lamps are used to attract the squid. The vessels engaged in fishery on cod use single jigger machines. Lights to attract the fish are not installed. The fish is attracted by the jigging motion and the artificial bait.Catch Handling and Processing EquipmentAll.EquipmentDeck EquipmentDepending on the size of the vessel and number on winches installed, one row of powerful lamps in the center of the vessel, or two rows on each side are installed. The bulbs have a power of up to 5000 W each. The distance of the bulbs are 0,5 - 0,6 m. The caught squid are lead by chutes from the jigger winches to the processing plant of the vessel. The jigging motion can be caused mechanically with the shape of the drum or with electronic adjustment of the winch motor. Many vessels are used during the day time as midwater trawlers and during the night as jiggers.Fish Detection EquipmentTypical fish detection equipment of jigger vessels consists usually of an echosounder.Fishing Gear Hooks and lines.
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