대수심 침체어망 조사장비 개발

Abstract

Derelict fishing nets on the seafloor have continuous influence on the fishing grounds through the so-called \\'ghost fishing\\' phenomenon, which is estimated to cause substantial loss of fishing yield crop. Particularly in Korea, seabed in deep ocean of 500m up to 1,000m range is still suffering from underwater litters such as fish traps and gill nets. In order to solve this matter, we have developed a practical and efficient survey equipment for sea bottom fishing gears. The equipment consists of a guide frame of Tow-sled type, deep-sea camera systems and a position tracking device. This paper offers brief introduction of the developed equipment with description of mounted attachments and required accessories. Additionally, we state valuable outcome of site-experiments at 500m water depth and appropriate requirements for application to 1,000m depth.