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Fuel Savings for Small Fishing Vessels

Author : Øyvind Gulbrandsen

Publisher :

Page : 57 pages

File Size : 33,42 MB

Release : 2012

Category : Fishing boats

ISBN :

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Book Description

"The recent sharp increase in the price of fuel has had a major impact on the economics of operating fishing vessels. Fishing boat owners and operators struggle to meet this challenge and ask what measures can be taken to reduce the heavy burden of increased fuel cost. Litres of fuel required per tonne of fish landed varies widely depending on the fish specia and fishing method used. Fuel saving methods have to be tailored to each fishing method and fishery. This manual aims to provide practical advice to fishing boat owners and crews, boatbuilders and boat designers and fisheries administrators on ways to reduce fuel costs. It focuses on small fishing boats measuring up to 16 m (50 ft) in length and operating at speeds of less than 10 knots. This covers the majority of the world's fishing boats. It also serves as a guide for those involved with fuel savings for small vessels used in support of aquaculture activities. The manual provides information to boat designers and boat builders on hull shape for low resistance and the selection of efficient propellers. The first chapters of this manual deal with fuel saving measures that can be taken on existing boats without incurring major investment costs. The most effective measures include reducing boat service speed, keeping the hull and propeller free from underwater fouling and maintaining the boat engine. It also suggests that changing fishing methods can save fuel. The final chapters of this manual provide information regarding the fuel savings that are possible by changing from a 2-stroke outboard engine to a diesel engine, installing a diesel engine, and using sail. Selecting economic engine power on the basis of the waterline length and the weight of the boat is discussed. Advice is given on the choice of gear reduction ratio and of propeller related to service speed, service power and propeller rpm. Data are provided to assist with the design of a new fuel-efficient boat and the selection of an optimum propeller. The information contained in this manual is accompanied by many illustrations to make the main points more easily understood. Detailed background information is provided in the appendices. The appendices also contain blank tables that may be used to calculate potential fuel savings, cost of engine operation, the weight of a boat and the diameter and pitch of a propeller."--Publisher's description.



Fuel and Financial Savings for Operators of Small Fishing Vessels

Author : J. D. K. Wilson

Publisher : Food & Agriculture Org.

Page : 60 pages

File Size : 15,67 MB

Release : 1999

Category : Fisheries

ISBN : 9789251042236

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Book Description

Fishing continues to be the most energy-intensive food production method in the world today, and it depends almost completely upon oil fuel-based internal combustion engines. There are as yet no signs of any other energy source that could substitute the internal combustion engine in either the medium or short term. The industry continues to be exposed to global fuel prices and it cannot be assumed that these will remain stable indefinitely. Small-scale fisheries account for nearly half of the world's fish production and, although they are generally more labour-intensive than larger industrial fisheries, they are increasingly affected by energy costs. In developing countries, in spite of the energy conservation initiatives of the 1980s (subsequent to the dramatic rise in the cost of fossil fuels), mechanization continues to increase. Fuel costs have ever more influence not only on consumer prices but also on fishermen's and boat owners' net incomes. When levels of employment and cost-sharing systems are considered, it becomes even more important from a social perspective to improve and maintain energy efficiency within small-scale fisheries. This guide presents information on the key technical areas that affect energy efficiency, but only part of the information presented herein will be applicable to any particular fishing situation. The guide is not a result of new original fieldwork but draws on much of the research and experience of the past two decades, updated where possible to include new technical developments. The guide is divided into two major sections: the first relates to changes in operational techniques rather than changes in technology; the second presents information of relevance to vessel operators who are either considering the construction of a new vessel or overhauling and re-equipping an existing vessel.



Fuel Savings for Small Fishing Vessels

Author : Øyvind Gulbrandsen

Publisher : Food & Agriculture Organization of the UN (FAO)

Page : 0 pages

File Size : 40,93 MB

Release : 2012

Category : Fishing boats

ISBN : 9789251070604

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Book Description

"The recent sharp increase in the price of fuel has had a major impact on the economics of operating fishing vessels. Fishing boat owners and operators struggle to meet this challenge and ask what measures can be taken to reduce the heavy burden of increased fuel cost. Litres of fuel required per tonne of fish landed varies widely depending on the fish specia and fishing method used. Fuel saving methods have to be tailored to each fishing method and fishery. This manual aims to provide practical advice to fishing boat owners and crews, boatbuilders and boat designers and fisheries administrators on ways to reduce fuel costs. It focuses on small fishing boats measuring up to 16 m (50 ft) in length and operating at speeds of less than 10 knots. This covers the majority of the world's fishing boats. It also serves as a guide for those involved with fuel savings for small vessels used in support of aquaculture activities. The manual provides information to boat designers and boat builders on hull shape for low resistance and the selection of efficient propellers. The first chapters of this manual deal with fuel saving measures that can be taken on existing boats without incurring major investment costs. The most effective measures include reducing boat service speed, keeping the hull and propeller free from underwater fouling and maintaining the boat engine. It also suggests that changing fishing methods can save fuel. The final chapters of this manual provide information regarding the fuel savings that are possible by changing from a 2-stroke outboard engine to a diesel engine, installing a diesel engine, and using sail. Selecting economic engine power on the basis of the waterline length and the weight of the boat is discussed. Advice is given on the choice of gear reduction ratio and of propeller related to service speed, service power and propeller rpm. Data are provided to assist with the design of a new fuel-efficient boat and the selection of an optimum propeller. The information contained in this manual is accompanied by many illustrations to make the main points more easily understood. Detailed background information is provided in the appendices. The appendices also contain blank tables that may be used to calculate potential fuel savings, cost of engine operation, the weight of a boat and the diameter and pitch of a propeller."--Publisher's description.



Fishing Vessel Safety

Author : National Research Council

Publisher : National Academies Press

Page : 303 pages

File Size : 23,37 MB

Release : 1991-02-01

Category : Technology & Engineering

ISBN : 0309043794

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Book Description

In response to a continuing high loss of commercial fishing vessels and crews, the U.S. Congress has mandated development of new safety requirements for the industry. This volume provides a blueprint for an integrated national safety program that responds realistically to industry conditions, with priority on the most cost-effective alternatives. Fishing Vessel Safety addresses the role of the U.S. Coast Guard and the fishing industry and evaluates such safety measures as vessel inspection and registration, and the training and licensing of fishermen. It explores vessel condition, the role of human behavior, the problem of weather prediction, the high cost of insurance, and more.



Ship Resistance and Propulsion

Author : Anthony F. Molland

Publisher : Cambridge University Press

Page : 569 pages

File Size : 23,1 MB

Release : 2011-08-08

Category : Science

ISBN : 0521760526

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Book Description

Written by experts in the ship design field, this book provides a comprehensive approach to evaluating ship resistance and propulsion.



Review of the techno-economic performance of the main global fishing fleets

Author : Van Anrooy, R., Carvalho, N., Kitts, A., Mukherjee, R., Van Eijs, S., Japp, D., Ndao, S.

Publisher : Food & Agriculture Org.

Page : 175 pages

File Size : 17,13 MB

Release : 2021-06-11

Category : Technology & Engineering

ISBN : 9251344701

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Book Description

This review of the techno-economic performance of the main global fishing fleets discusses the outcomes from 20 country-level studies of fishing fleets from Africa, Asia, Europe, North and South America. It includes financial, socio-economic and technical information from 103 major (semi-) industrial fishing fleet segments, which are responsible for an estimated 39 percent of marine capture fisheries production worldwide. The analysis of vessel characteristics reveals substantial differences in fishing capacity (in terms of vessel length, tonnage and power) between fleet segments. An increase in the gross tonnage of average vessels was observed in fleet segments also covered in previous reviews. Substantial increases in average length overall and engine power were observed in several Asian fishing fleets. The age structure of the fishing fleets in most regions, except Asia, shows an upward trend. An analysis of the costs and earnings data showed that labour and running costs were the two main cost components for the majority of fleet segments. Ninety-two percent of 97 fleet segments reported a positive net cash flow in the year they were surveyed, in the 2016–2019 period. Net profit margins of 10 percent or more were realized by average fishing vessels in 73 percent of the fleet segments. Returns on investment (ROIs) of 10 percent or higher were realized by 61 percent of the fleet segments. The review also discusses developments in fishing technologies. These developments, along with a general increase in seafood prices, successful fisheries management in some areas, and improved fleet capacity management in Europe and North America, have all contributed to the ongoing, positive financial and economic performance of the main global fishing fleets in recent years.





Fishing operations. 1. Best practices to improve safety at sea in the fisheries sector. FAO Technical Guidelines for Responsible Fisheries No. 1, Suppl. 3

Author : Food and Agriculture Organization of the United Nations

Publisher : Food & Agriculture Org.

Page : 217 pages

File Size : 25,16 MB

Release : 2018-11-15

Category : Nature

ISBN : 9251088098

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Book Description

These guidelines have been produced to support implementation of the Code of Conduct for Responsible Fisheries with regard to safety at sea in the fisheries sector. Their purpose is to enable relevant authorities to develop and implement strategies aimed at improved safety, health and conditions of service at sea in capture fisheries and aquaculture operations. They apply to all commercial fishing activities, as well as activities at sea within the aquaculture sector. Furthermore, the principles therein, may also be applied to vessels engaged in fisheries research. However, while these guidelines are not directed at sport and recreational activities carried out within the aquatic environment, administrations responsible for such sectors may well take note of the safety and health issues therein. The guidelines contribute to Strategic Objective 5: Increase the resilience of livelihoods to threats and crises.



Fisheries Technologies for Developing Countries

Author : National Research Council

Publisher : National Academies Press

Page : 177 pages

File Size : 11,16 MB

Release : 1988-02-01

Category : Technology & Engineering

ISBN : 0309037883

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Book Description

In developing countries, traditional fishermen are important food contributors, yet technological information and development assistance to third-world nations often focuses on agriculture and industrial fishing, without addressing the needs of independent, small-scale fishermen. This book explores technological considerations of small-scale, primitive fishing technologies, and describes innovative, relatively inexpensive methods and tools that have already been successfully applied in developing countries. It offers practical information about all aspects of small-scale fishing, including boat design and construction, fishing methods and gear, artificial reef construction and fish aggregating devices, techniques for coastal mariculture, and simple methods for processing and preserving fish once they are caught. Fisheries Technologies for Developing Countries is illustrated throughout with photographs of the devices and construction methods described in the text.



Assessment of the sustainability of fishing technologies and operations in Thailand: Options for innovation

Author : Food and Agriculture Organization of the United Nations

Publisher : Food & Agriculture Org.

Page : 60 pages

File Size : 28,19 MB

Release : 2023-11-06

Category : Technology & Engineering

ISBN : 9251383456

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Book Description

To make small-scale fisheries in Thailand more sustainable, fishers need to invest in responsible fishing operations and technologies, reduce overfishing, contribute to fisheries management, and implement climate change adaptation measures. The Southeast Asian Fisheries Development Center and FAO carried out an assessment of the sustainability of currently used fishing technologies and operations in Thailand, to identify options for innovation and improvements. This circular provides information on the current technological status of the Thai fishing fleets, the costs of fishing operations, the management of the main fisheries, and on the status of the main marine fisheries resources targeted by the various fishing fleets. Options for introducing technological innovations for fishing vessels include the reconfiguration of the hull by installing a bulbous bow, stabilizing fins, duct propellors and wave resistance reduction measures. On-board equipment innovations identified include hydraulic hauling systems, power blocks, refrigeration systems, fuel flow monitoring systems, solar panels, and LED lights. To improve safety, vessel owners are recommended to provide lifesaving equipment, radio communications and firefighting equipment, first aid kits, cooking and sanitation facilities, emergency stops on winches and hauling devices, lightning conductors, and distress signal devices. Fishing gear innovations such as circle hooks, low-resistance gears, turtle excluder devices, juvenile and trash excluder devices, and fish aggregating devices are also important innovations for fishing vessel owners to consider.This circular gives fishing vessel owners and financial service providers in Thailand insights in the innovations available, to make better informed fisheries investment decisions.