舟山市海洋渔业结构调整的现状与展望

海洋捕捞产业是浙江省舟山市的传统基础支柱产业，但由于中日和中韩渔业协定的签订和生效，成千上万的渔民面临着转产转业问题。本文通过几年来的实践分析，提出了四点建议和措施，为舟山市的渔业可持续健康发展提供建设性意见。     

Global scope and economics of illegal fishing

We present a conceptual model for the analysis of the costs and benefit aspects of the risk inherent in illegal, unreported and unregulated (IUU) activity. We then develop and present a map of IUU incidences as reported in the Fisheries Centre's Sea Around Us project IUU global database. This map shows that IUU activities are quite widespread geographically. We next present an analysis of the cost and benefit aspects of risks of IUU fishing. A key result of the study is that for the cases analyzed as a group; the expected benefits from IUU fishing far exceed the expected cost of being apprehended. For an assumed 1 in 5 chance of being apprehended, our calculations show that reported fines for the vessels apprehended will have to be increased by 24 times for the expected cost to be at least as much as the expected benefits.     

On the development of a small catamaran boat

Hull forms and hydrodynamic characteristics of small catamarans are studied. The results of model tests and numerical simulations are cross-examined to carefully investigate the shallow water behaviors of the boats as well as the influence of spacing between demi-hulls on the resistance characteristics. A 12 m long 9.77 ton class catamaran has been developed and several ships have already been produced and deployed as pleasure fishing boats along the west coast of the Korean peninsula. The boats are made of fiber-reinforced plastics and are equipped with a pair of 280 hp diesel engines and water jet propulsion systems. The maximum speed of a fully loaded catamaran exceeds 25 knot. The results of sea trials are compared with those predicted from the model tests.