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Tuna purse seiner
Tuna purse seiner
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Characteristics
Deck TypeDecked vesselsOverviewThese vessels are large purse seiners with the same general arrangement as the American seiner, equipped to handle large and heavy purse seines for tuna. For improved manoeuvrability during fishing operations the vessels may be equipped with bow thrusters.Vessel ClassLengthnormally over 45 meters  (LOA) Powernormally > 1000 HPTonnagenormally > 100 GT  (GRT in register tons) Deck ArrangementThese seiners usually have the bridge and accommodation placed forward. A crows nest or a tuna tower is placed at the top of the mast. A crows nest or tuna tower is normally outfitted with all control and manoeuvre devices. A very heavy boom is fitted at the mast to carry the power block. The search for tuna schools is often carried out by a helicopter, for which a landing platform is provided on the superstructure.Catch Handling and Processing EquipmentFrozen fish.EquipmentDeck EquipmentTheir deck equipment consists of a three drum purse seine winchs and a power block, with topping, vang, cork and other specific winches to handle the heavy boom and net. They are normally equipped with a skiff located on top of the net or at the stern ramp of the vessel.Fish Detection EquipmentVisual scouting, whether it be from the crows nest or the helicopter is still the most important method for detection of tuna. But nevertheless the vessels are equipped with advanced electronic equipment for navigation and fish detection.Fishing Gear Purse seines.
 
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