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NANSIS is a Survey Information System for logging, editing and analysis of biological and environmental data from marine research surveys.

The main objective of the program has been to provide research and management institutions in developing countries with information of the status of fish resources as a tool for a rational management. Historically the methods used were mainly acoustic surveys for the pelagic resources, and bottom trawl surveys for the demersal resources.
The basis information collected through the fishing operations consists of station data (time, position, depth, purpose, etc.,) and catch-by-species data. These are stored in trawl-data-files. In addition, length-frequency samples are taken for the important species. Additional samples on, for example, maturity, sex, and body weight are collected for certain target species.

CDCF also offers courses and training to Nansis users.