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Reducing The Fuel Costs Of Small Fishing Boats - BOBP/WP/27









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    Inboard Motorization of Small G.R.P. Boats in Sri Lanka - BOBP/WP/4 1980
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    This document presents the initial findings of an experiment to study the feasibility of installing low-powered diesel engines in suitable small craft presently operating in Sri Lanka. The diesel engine used in the experiment (Petter AC1 6 hp aircooled) was donated to the Ministry of Fisheries in Sri Lanka by the Ministry of Overseas Development, U.K. The Ceynor Foundation Limited, Karainagar, were contracted to supply the 18.5 ft GRP boat used in the experiment. The inboard motorizati on project is an activity of the Bay of Bengal Programme (Development of Small-Scale Fisheries in the Bay of Bengal — GCP/RAS/040/SWE). The Programme is executed by the Food and Agriculture Organisation of the United Nations (FAO) and funded by the Swedish International Development Authority (SIDA). The main aims of the Programme are to develop and demonstrate technologies to improve the conditions of small-scale fishermen and the supply of fish from the small sector in five countries that borde r the Bay of Bengal — Bangladesh, India, Malaysia, Sri Lanka and Thailand.
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    Pivoting Engine Installation For Beachlanding Boats - BOBP/WP/44 1986
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    This paper describes the efforts to develop an appropriate engine installation for boats designed and developed for fishermen in India and Sri Lanka operating from surf ridden beaches. These boats have to negotiate rough surf conditions for most part of the year with breaking waves up to two metres in height. The paper details the different types of pivoting engine installations tried out with air-cooled and water-cooled engines of different makes. The problems faced, the improvements made and the conclusions derived are set out. It also includes a detailed description of an installation. The detailed drawings are available with BOBP and may be obtained on request. The work on engine installations described in this paper was carried out by the small-scale fisheries project of the Bay of Bengal Programme (BOBP) as part of its beachcraft development project. It began in 1980. The first trials were conducted from a beach just outside Madras and were reported in BOBP/WP/7 “T echnical Trials of Beachcraft Prototypes in India.” The original concept of the pivoting engine box was conceived by 0. Gulbrandsen (Naval Architect Consultant) who also designed the first prototype. Further development described in this paper was done by the authors, assisted by BOBP Associate Professional Officers P.A. Hemminghyth (Marine Engineer) and SO. Johansen (Naval Architect), counterpart officers S.B. Sarma (Andhra Pradesh), E. Srinivasan (Tamil Nadu) and G. Patrick (Colombo). G. Gowing (Surf Crossing Consultant) from Australia also contributed several useful ideas. Trials were carried out in Tamil Nadu, Andhra Pradesh and Orissa in India and Sri Lanka. Another BOBP document of direct relevance to the subject described in this paper is BOBP/WP/45 “Further Development of Beachlanding Craft in India and Sri Lanka.”
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    Improvement of Large-Mesh Driftnets for Small-Scale Fisheries in Sri Lanka - BOBP/WP/3 1980
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    Large-mesh driftnets play a pivotal role in Sri Lankas small-scale fisheries. They captured about 25% of all the fish Sri Lanka produced in 1978. In view of the rising cost of these widely used nets, a nine-month experimental project was conducted in 1979 on making the nets less costly and more productive. Under the project, fishermen-cum-boat-owners in two fishing centres-Beruwala and Velvettiturai- used two kinds of nets: traditional nets and the modified nets supplied by the Bay of Benga l Programme. Comparative data on fish catch by species and weight for the two kinds of nets revealed that nylon nets of finer yarn-which are 25% cheaper than the traditional nets-raised the fish catch by 20 to 30 per cent during the experiments. The other conclusions resulting from the experiments concern the ropes and floats used for driftnets. Polypropylene ropes and large cylindrical auxiliary surface floats are as good as —and cheaper than the nylon ropes and small longitudinal floats u sed at present with largemesh driftnets. Following from the above, the main recommendation is that the use of thinner nylon netting material, of polypropylene ropes and of large floats should be energetically promoted. Their manufacture and import should be encouraged.

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