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The use of ice on small fishing vessels The use of ice on board smaller fishing vessels is increasing. One reason for this is the decrease in near-shore fish resources that is forcing the fishermento make longer fishing trips and to conserve the catch on board during the trip. Another reason is the increasing demand for good quality fresh fish and the globalization of the markets for these products with increased quality control. This publication describes the requirements for the use of ice (and chilled seawater) on board fishing vessels, from small insulated containers in dugout canoes, to refrigerated tanks on bigger vessels. It also gives an overview of the different types of ice plants and the ice produced in them. Chapter 1 describes the physical changes in fish exposed to heat, and how chilling the product delays these processes. Chapter 2 gives an overview of the different types of ice and chilled seawater and how they are produced. Chapter 3 describes the installation requirements for shore-based ice plants and how the ice is stored and handled. Chapter 4 describes the on-board handling of ice and fish, including the advantages and drawbacks of the different types of ice and chilling systems. Chapters 5 and 6 give a description of the materials used for insulation and the design of insulated containers and fish holds. Finally, in Chapter 7 some calculations are given that can be used to estimate the quantity of ice needed for a fishing trip, and the volume of the fish hold. The publication is aimed both at fishermen who want more information about the different techniques used, and at boat owners and economic agents who want to invest in the use of ice to preserve the catches.