JPH0678651A - Method for hauling highly fresh fish by round haul net fishing - Google Patents

Abstract

PURPOSE:To preserve the caught fishes of a round haul net fishing in a high fresh state suitable for eating the fishes in the raw state by catching the fishes by the round haul net fishing in an amount restricted in a range permitting the quick freezing of the caught alive fishes, freezing the caught fishes and subsequently reserving the caught fishes. CONSTITUTION:A practical capacity suitable for quickly freezing caught fishes so as not to change the qualities of the fishes is set for the rated capacity of the brine freezing holds of a round haul net fishing ship. When the fishes are caught in a fishing ground, the round haul net is applied so that the fishes are caught in the practical capacity, and subsequently wound up, while a fish bank having such a size as not weakening the fishes is secured. The alive fishes are taken out from the fish bank, charged into a brine-freezing hold in the practical capacity, and subsequently quickly frozen to provide the highly fresh frozen fishes. The frozen fishes are transferred to cold-reserving holds, reserved so as not to cause the deterioration of the frozen fishes during the fishing period, and subsequently taken out from the cold reserving holds and landed on a landing place.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method of landing high freshness by purse seine fishing. For more details, limit the catch of the purse seine fishery to the range where live fish can be frozen rapidly, and perform catching, freezing, and cooling to make the fish caught in the purse seine fishery high freshness suitable for raw eating. Regarding the method.

[0002]

2. Description of the Related Art The purse seine fishing method is a fishing method in which a purse seine net is squeezed around a school of fish, and the nets are successively squeezed from the end. Since this is caught up in the net and taken up without exception, fishing can be completed in a short period of time and the operating efficiency is excellent.

However, when a large amount of fish is taken in by the above-mentioned winding net, the fish are often tightened and dead or marred when the net is fried, and the meat quality is already deteriorated before freezing. The frozen meat is frozen by putting fish in a full state, so it takes a long time to freeze and becomes slow freezing, and the deterioration of meat quality progresses during freezing, so the meat quality of frozen products is not suitable for raw eating However, even if it is transferred to an ultra-low temperature cold storage box and kept cold before being landed, the landed product is only worth the raw material of the processed product, so the fish price is low and the income is large even if the catch is large. There was little, and it was the present condition of so-called good harvest poverty.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of this situation, and the catching, freezing, and preserving treatments are performed by matching the catch by the purse seine with the quick-freezeable amount of live fish. By doing so, it is an object to improve the freshness of the fish caught by purse seine fishing so as to be suitable for raw eating, and to provide a landing method that can improve management because high income can be obtained with a small catch.

[0005]

The method according to the present invention sets a substantial capacity suitable for quick freezing of a fish against the rated capacity of a brine freezing barge of a purse seine fishing vessel so as not to cause a change in meat quality. However, when fished at a fishing ground, a net is put so that the above-mentioned substantial amount of fish can be taken in, and the net is rolled up while ensuring a fish pool that does not weaken the fish, and then lived from the fish pool. Pick up the fish and put a substantial amount into the brine freezing barn to rapidly freeze the live fish to obtain frozen fish with high freshness, and transfer this frozen fish to an ultra-low temperature cold barn to cause alteration during the fishing season. The problem will be solved by keeping it in a safe place so that after the end of fishing, it is taken out from the cold storage barge at the unloading land and landed.

[0006]

The above-mentioned method for landing high freshness by purse seine fishing according to the present invention is based on the rated capacity of the brine freezing barge of the purse seine fishing vessel, and has a substantial volume suitable for quick freezing of live fish so as not to cause meat quality deterioration. To set. Since this actual capacity is usually 1/3 or less of the rated capacity, it is set to 1/3 here. When the group of detected fish is larger than the above-mentioned actual volume when going out to the fishing ground and fishing, the net is draped so as to divide the school, and a net amount of fish is taken into the net to wind up the net. To do. Then, the net gradually approached the fishing boat while being squeezed, and it was easy to catch the fish on the port side, and a fish pool was formed to the extent that it did not weaken the fish. If the fish is sent to the freezing barn and the above-mentioned substantial volume of fish is put into the freezing barn for freezing, the freezing of the fish starts from the state of living cells, and the freezing progresses rapidly due to the volume regulation, so-called rapid freezing. As a result, the frozen fish with excellent meat quality of the thawed fish close to that of live fish can be obtained.

The frozen fish thus obtained is taken out from the brine freezing barn and transferred to an ultra-low temperature cold-keeping barn such as an air blast type. If it is kept cold at an ultra-low temperature of about -50 ° C to maintain the freshness, the frozen fish will be frozen. Is stored for many months during the fishing season without any change in meat quality, so if you arrive at the landing site after finishing the fishing, you can take out frozen fish from the cold insulation barge and land it. Because the meat quality is very fresh, close to that of live fish, and has excellent taste and texture for raw eating, the fish price per 1kg is twice as much as that of the multi-catch net fishing, which is only a raw material for processed products. Even if the catch is small, the profit will increase and the profitability of fishing will be greatly improved.

[0008]

EXAMPLE An example of a method for landing high freshness by purse seine fishing according to the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an example of arrangement of freezing barges and cold insulation bars of a purse seine fishing boat adopting the method according to the present invention.

As shown in FIG. 1, frozen barges 1P to 6 are provided on the bottom side of the ship.
P and 1S to 6S with cold storage bar 7P to 9P on the deck side
In a purse seine fishing boat S equipped with and 7S to 9S, when 6P of 4P to 6P and 4S to 6S of the above-mentioned freezing barges are used for brine freezing barges, the rated capacity of each barb is 30 tons. When the total rated capacity is 180 tons, if the actual capacity suitable for performing quick freezing without deterioration of meat quality is 1/3 of the rated capacity as described above, the total capacity is 180 tons. 60 tons, which is 1/3 of tons, is required, which is the actual capacity for catching. Then, if 6 barges are used for freezing brine as described above, the actual capacity per barge is set to 10 tons, which is 1/6 of 60 tons.

When fishing at the fishing ground, if the detected fish group has a net capacity of 60 tons or less, the whole fish county is taken into the net. And net it to take in a net capacity of 60 tons. Then, by rolling up the net, a fish pool was formed that was easy to pick up the fish and did not weaken, and the fish was picked up from this fish pool and cooled to −20 ° C. with sodium chloride brine. ~ 4S
Add fish to. At this time, the brine temperature of the frozen barbecue rises with the addition of fish, and is about -1 with about 1/3 of the rated capacity.
Since it reaches 3 ° C, the temperature is detected by a sensor and the amount of charge is regulated by means of issuing a warning of stoppage of the charge,
About 10 tons of fish was stored in each freezing barn and frozen.
As a result, the freezing fish started freezing while the fish were still alive, and quick freezing of live fish that was frozen in about 5 hours was performed.

As described above, the quick-frozen fish was -50
Moved to cold storage rooms 9P and 9S such as air blast type that can maintain ultra low temperature of about ℃ The frozen fish that had been kept cold in was taken out and landed. As a result, the frozen fish that have been landed retain their meat quality when they are thawed in a state close to that of live fish, and when tasted, they have an excellent taste and texture that are comparable to landed products from inshore fish. Unusual 1kg 20 for landing
Priced at just under 0 yen, it is one of the other landed products of multi-catch purse seine fishing
The price was twice as high as that of a little less than 90 yen per kilo.

[0013]

EFFECT OF THE INVENTION The method for landing high freshness by purse seine fishing according to the present invention enables live fish to be caught by purse seine fishing on the basis of the amount of freezing at which freshness suitable for raw eating is obtained by rapid freezing of live fish. Since frozen fish can be frozen rapidly by keeping it frozen, if you freeze this frozen fish at ultra-low temperature and land it, it will have an excellent meat quality at the time of thawing, which is similar to that of live fish, and has a good taste and texture and is suitable for raw consumption. Since it is well received, it can be traded at a price that is more than twice as high as in the case of over-catch, so even if the catch is small, the yield will increase, and it will be a great way for the industry to open a way for the purse seine fishery that is crying for poor fishing It can make a contribution.

[Brief description of drawings]

FIG. 1 is a plan view showing the arrangement of freezing barges and cold insulation bars of a purse seine fishing boat that employs the method according to the present invention.

[Explanation of symbols]

 S Fishing net fishing boat 1P to 6P and 1S to 6S Brine freezing barge 7P to 9P and 7S to 9S Air-cooled cold storage barge

Claims (1)

[Claims] 1. When catching in a fishing ground, a real capacity suitable for quick freezing of fish is set against the rated capacity of a brine freezing barge of a purse seine fishing vessel so as not to cause meat quality change.
A net is put so that the substantial amount of fish can be taken in, and the net is rolled while securing a fish pool that does not weaken the fish, and the live fish is picked up from the fish pool to the brine freezing barge. A substantial amount of the fish is put in, and the live fish are rapidly frozen to obtain frozen fish of high freshness.The frozen fish are transferred to an ultra-low temperature cold hold and stored so as not to deteriorate during the fishing season. A method for landing high freshness by purse seine fishing, which is characterized by taking out from a cold storage barge and landing at a loading area.