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Abstract
Currently, the composite fishing boats in Vietnam have been constantly increasing in number, size, and engine power. That lead to a significant increase in production and efficiency of fishing activities. However, the quality of post-caught products has not been improved, which significantly reduces the cost of products and affective the income of fishermen. Therefore, improving the efficiency of cold preservation in the boat hold for composite fishing boats is the key solution to enhance the product quality. One of the main causes affecting the preservation efficiency is due to heat loss through the structure of the cargo hold. The main structure of the fish boat hold is a sandwich with three layers of materials: laminated composite of hull panel, Polyurethane insulation and composite liner. In this study, the heat loss through the boat hold structure of a particular composite boat was calculated for different temperatures level, ranging from 1ºC to 5ºC Base on those results, some solutions improving the efficiency of cold preservation are proposed that can be applied in practice.