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Archive for the ‘PURSE SEINE FISHING’ Category

Purse Seine Vessels and Gear Efficiency

May 23rd, 2010

molitva leyli

Enhance Purse Seine Vessels and Gear Efficiency – Effective Purse Seine Operation

In review of papers on purse seine gear and technology, the author proposed that purse seine efficiency can be defined by an increasing ability to land a given quantity of tuna in less time, or an increased catch potential in a given time period (one year). This increasing efficiency consists of increasing actual fishing time, minimizing in port turnarounds, increasing the speed with which tuna can be caught, loaded and frozen onboard and decreasing overhead costs. It was proposed that purse seine efficiency can be achieved by:

I. Adequate fishing power large deep net designed for fast pursing

full complement of electronics for tuna school assessment (high and low frequency sonar, scientific grade echo sounders, (more…)

Tags: brailing, conveyor belts, Design vessel, echo sounders, effective purse seine, FAD, frequency sonar, purse seine operation, quickly purse large net, radio buoy, rapid net hauling, refrigeration, sacking, skiff, telesounder

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Fish Luring – Purse Seine Operation

May 13th, 2010

molitva leyli

This ‘Fish Luring System’ is being used in ‘Light boat’ of ‘Large-scale Purse Seine Fishery’.

Fish Luring Target Species

This system is being used for catching ‘Mackerel, Sardine, Hairtail, Squid, Filefish,Tuna Like Fish, etc’.Large-scale Purse Seine Fishery consist of one Net Boat, two-three Light Boats, two-three Carriers’.Here Light boats have Aerial Lamps and Underwater Lamps to lure fishes near to sea surface. And these Light Boats have Sonars or Fish Finders (more…)

Posted in FISHING GEAR, PURSE SEINE FISHING

Tags: Aerial Lamps, Boat Fish, casting net, Ec21, fish finder, Fish Finders, fish luring, fish luring purse seine, Fishermen, Fishery, Fishing Grounds, gathering fish, Lamp Socket, Lamps, light boat, Light Boats, mackerel, purse seine, purse seine operation, Reel Source, Sea Surface, sonar, Sonars, Summary Search, Target Species, Tuna Fish, Underwater Lamp, Underwater Lamps, Underwater Light

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Purse seine and longline fishing gear and vessel efficiency

May 11th, 2010

molitva leyli

An examination of vessel, gear and operational details useful for fishery-specific effort standardization, including FAD-related gear and fishing strategies

By ; David G. Itano, Pelagic Fisheries Research Program, Honolulu, Hawaii – ESTHER (Efficiency of the Tuna Purse Seiners and Effective Effort).

The European Union funded 3 research project ESTHER (Efficiency of the Tuna Purse Seiners and Effective Effort) examined vessel and gear attributes of the EU purse seine fleets and conducted analyses and modeling to gauge the impact of various factors to fishing efficiency (Gaertner and Pallares 2002).. These factors were considered key technical improvements adopted by EU purse seiners that significantly increased vessel efficiency: (more…)

Posted in FISHING boat ship vessel, FISHING GEAR, LONGLINE FISHING, PURSE SEINE FISHING

Tags: Longline, LONGLINE FISHING, longline fishing boat for sale, longline fishing boats, longline fishing bycacht, longline fishing gear, longline fishing hook, longline fishing jobs, longline fishing method, longline fishing regulation, longline fishing regulations, longline fishing supplies, longline fishing supply, longline fishing tackle, longline fishing technics, longline fishing technology, longline fishing winch, longliner, purse seine, purse seine boat for sale, PURSE SEINE FISHING, purse seine fishing definition, purse seine for sale, purse seine gear, purse seine jeffers, purse seine photos, purse seine poem, purse seine vessel owners association, purse seiner, purse seiners, purse seiners for sale, tuna longline

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Purse seine fish loading systems – brailing system

May 9th, 2010

molitva leyli

Previous purse seiner brailing method

Rapid loading of the catch is critical in the WCPO where sea surface temperatures (SST) are normally at or above 28°C. The older US style of brailing, as pictured in Figures 1 – 4 use a relatively lightweight brailer fitted with a long handle that was manually pushed down into the sacked up tuna.

This system was developed and introduced from the Eastern Pacific purse seine fishery where SSTs are much lower and set sizes were typically not as large. Brailing in this style loads approximately two mt per brailer, is relatively slow, therefore suitable for sets of less than ~ 100 – 125 mt. (more…)

Posted in FISHING GEAR, PURSE SEINE FISHING

Tags: boom, boom hydraulics, brailer, brailer sack, brailing boom, brailing methods, brailing system, fish loading, group purse seine, group seine, group seine operation, hauling, net brailer, purse seine, purse seine loading, rapid loading, rapid loading fish, spanish brailing system, winch brailer

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Purse Seine Fishing Gear – Brailing System Equipment

May 9th, 2010

molitva leyli

Purse seine rail rollers speed up tuna brailing. Hydraulically driven, rubberized rail rollers have been used on Japanese group seiners for decades. The entire side of some vessels are equipped with these rollers which greatly speed the process of drying the net (sacking up) prior to brailing (Figure 3).

Figure 1. Note rail roller on port side of working deck below the gangway

On some vessels, swivelling pinch haulers assist the process by hauling sections of webbing to keep the net even during the drying process (Figure 2). On group seiners, the catch (more…)

Posted in FISHING GEAR, PURSE SEINE FISHING