WEKO3
アイテム
漁船漁業経営の収益性改善に関する研究
https://fra.repo.nii.ac.jp/records/2010949
https://fra.repo.nii.ac.jp/records/2010949cfa7de9d-7c63-4b39-8fb4-2319bcbe1e2c
| 名前 / ファイル | ライセンス | アクション |
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fra_k_47_1.pdf (17.6 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2024-10-02 | |||||
| タイトル | ||||||
| タイトル | 漁船漁業経営の収益性改善に関する研究 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Study on the profitability improvement of the fishing boat fishery | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | the fishing boat fishery; profitabiility improvement; offshore longline; choice of the fishing ground; Kesennuma | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
鶴, 専太郎
× 鶴, 専太郎 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | At one time Japan was one of the world's major fishing nations. The continuation of fishery management has gotten into difficulties in Japan since the 90's. The reason is the decrease in marine resources and reinforcement of the international regulation, lower price of fish following an increase in import marine products, and soaring fuel prices. The decline of fishery is brought by the deterioration of external environment conditions such as the economic and market conditions and internal environment conditions such as management capability in Japan. The purpose of this study is to explore the profitability improvement of the management of the fishing boat fishery paying attention to internal environment conditions of fishery management. Fishery with a ship, boat or vessel is defined as the fishing boat fishery in contrast to aquaculture and fixed-net fishing. I set two subjects to achieve the purpose mentioned above in this study. First, I clarified the business condition of the fishing boat fishery in Japan. Second, I examined an approach to improve profitability of the fishing boat fishery. With reference to documents and statistics documents, I used return on sales as an index and analyzed business condition. Taking up fishery of offshore tuna longline at Kesennuma City as an example, I evaluated fishing ground productivity and choice of the operation method and choice of the fishing ground. Profitability improvement is defined as the profit that does not come to have a deficit when deducting the total cost from landing proceeds. In other words, the policy of the profitability improvement aims at return on sales to become a non-minus number. The fishery of tuna longline is one kind of the fishery to represent fishing boat fishery in Japan. The fishery of tuna longline is comprised of inshore, offshore, and pelagic. There is the fishery of offshore tuna longline in a position of a nucleus-like local industry in the coastal fishing village areas of Miyagi, Miyazaki, and Kochi. The ups and downs of this fishery decide the vicissitudes of the fishing village regional economy. As a result of having examined the business condition of the fishing boat fishery in Japan from return on sales, the return on sales showed a periodic change between a plus and loss from 1975 through 2000. The return on sales has resulted in negative value every year since 2000 and is a tendency to drop more. It is revealed that fishery management turned for the worse. The fishery of tuna longline that is higher than the 50 ton's layer. The Kesennuma offshore tuna longline fishing boat usually engages in the shallower set operation to catch swordfish and blue shark mainly. An offshore tuna longline fishing boat base in Kesennuma and it is supposed that the fishing boat performs a voyage for 12 months with 29 days a month. With reference to operation records and landing results about Kesennuma offshore tuna longline fishing boat, the average fishery effort and catch and fishery amount of money, costs and profit according to the monthly voyage are obtained every 1 degree latitude and longitude division of the northern Pacific sea area. Each item is described on a chart about geographical distribution. Using this result, the characteristic of the seasonal catch at fishing ground and deflection of the fishery effort, and :fluctuation of the profit are specified. In addition, a highly profitable operation method is examined. As a result, monthly profit shows a high profitability from late autumn through early spring at the fishing ground located near the shore of Japan, while it shows low profitability in summer. The species showing high profitability include swordfish and blue shark. Either of the species is caught in summer as a low profitability species. The summer bigeye tuna fisheries at 36~37°N and 160~170°E have a possibility to improve their operation. However, it is thought that the fishing ground distant from the coast line has low profitability as a whole. It was thought that a close inspection of the income and expenditure was necessary for summer operation in particular. By this result, it was inspected whether securing of profit was possible, when changing the main target to tunas from spring to the summer. The offshore tuna longline fishing boat less than 20 tons was considered to be a model in engaging in the tuna operation. These ships usually engage in the deeper set operation for tunas mainly deepening the arrival depth of fishing implements. A Kesennuma offshore tuna longline fishing boat bases in Choshi and it is supposed that the fishing boat performed a voyage for 12 months with 29 days a month. With reference to operation records and landing results about Kesennuma offshore tuna longline fishing boat, the average fishery effort and catch and amount by catch, costs and profit according to the monthly voyage is obtained every 1 degree latitude and longitude division of the northern Pacific sea area. Each item is described on a chart about geographical distribution. Using this result, the characteristic of the seasonal catch at fishing ground and deflection of the fishery effort, and :fluctuation of the profit are specified. In addition, a highly profitable operation method is examined. Using this result, the profit per one boat of one voyage is added up for 12 months. The profit of the total of 12 months is a deficit of -3,394,000 yen for the deeper set operation for tunas. On the other hand, the profit of the total of 12 months is a surplus of 11,619,000 yen for the shallower set operation for swordfish and blue shark. The deeper set operation has lower profitability than the shallower set operation through the year. The fish ground of the deeper set operation has low profitability in summer. The deeper set operation and the shallower set operation have a surplus between autumn and winter seasons, and have a deficit between spring and summer seasons. The improvement of the profitability by the deeper set operation introduction is difficult in summer. Therefore, continuing the shallower set operation same as before and cost reduction in summer and trying for the unit price improvement of the blue shark are realistic. Then, the maintenance period of the boat is really necessary. I assumed the operation period for 11 months a year and the maintenance period of one month. I calculated it as a test about how to choose the month of the maintenance when profit becomes maximum for the shallower set operation and the deeper set operation. In addition, I calculated to test which month is most suitable to choose the shallower set operation or the deeper set operation. I use the Solver that is an optimization analysis tool in Excel for these test calculations with the combination of the expected fishery amount of money and fuel oil expense, and annual fixed cost. Furthermore, I performed a test calculation when a fishery mutual aid system is introduced as correspondence at the time of the poor catch. From the result of the Solver, both operations of the shallower set and the deeper set become the deficit voyage from May to September. As mentioned above, the improvement of the profitability by the deeper set operation introduction is difficult in the same period. The deeper set operation and the shallower set operation have a deficit of 11 month's profit and setting a maintenance period in July for both operations together minimizes the deficit. The most suitable choice of the deeper set operation and the shallower set operation has a deficit of 11 month's profit and setting a maintenance period in July for both operations together minimizes the deficit similarly. The deficit by suitable choice is lower than the deeper or the shallower set operation. Each case comes to have a deficit by the test estimation using the fishery mutual aid system. As for the introduction of that system, it does not become the basic solution. It will not improve management even if the deeper set operation of fishing boat of less than 20 tons is simply introduced into the Kesennuma offshore tuna longline fishing boat of more than 119 tons. It is guessed that the deeper set operation of fishing boat of less than 20 tons had lower cost than Kesennuma offshore tuna longline fishing boat. and, as a result, the profitability is inferred better. The main reasons for this are a small size engine and a small crew. Finally, I considered a reduction in the possibility of the deficit voyage by choosing a fishing ground that can secure the surplus when the fishery amount of money is less than the mean (expectation). I also considered a reduction in the possibility of the deficit voyage by avoiding a fishing ground that has high deficit when the fishery amount of money is more than the mean (expectation). I supposed the fishery catch to be a normal distribution. μis the mean (expectation), and sigma is the standard deviation (0). I defined the units of increase and decrease as standard deviation. I assessed the fishing ground with three phases ofμandμ-0 andμ-20 of the surplus fishing ground estimate. I also assessed the fishing ground with two phases ofμ+20 andμ+30 of the deficit fishing ground estimate. As appearance probability of the surplus rises, a surplus fishing ground is limited. As appearance probability of the deficit rises, a deficit fishing ground is limited, similarly. | |||||
| 言語 | en | |||||
| bibliographic_information |
ja : 水産研究・教育機構研究報告 en : Bulletin of Japan Fisheries Research and Education Agency 巻 47, p. 1-81, ページ数 81, 発行日 2018-03 |
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| 出版者 | ||||||
| 出版者 | 水産研究・教育機構 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Japan Fisheries Research and Education Agency | |||||
| 言語 | en | |||||
| item_10002_source_id_9 | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 2432-2830 | |||||
| item_10002_source_id_11 | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12767505 | |||||
| item_10002_relation_11 | ||||||
| 識別子タイプ | EISSN | |||||
| 関連識別子 | 2758-3953 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | fra_k_47_1 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010922973 | |||||
| 関連名称 | 日本農学文献記事索引（AgriKnowledge） | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
