Catches and effort - vessels using drifting longlines

Catch and effort data (as of 18-09-2013) are presented as three different files (compressed with WinZip):

• vessels using drifting longlines — CELL.csv 

• vessels using pole and lines or purse seines — CEPSBB.csv
• vessels using gears other than those referred to above — CEOTHR.csv 



Catches (in tonnes or/and in number) and effort are recorded per Fleet, Year, Gear, Type of School, Time Interval (month or quarter usually), grid (usually 1 degree square areas for surface gears and 5 degrees square areas for longlines) and species. 

Catches and effort are not available for all Nominal catches strata. When recorded, the catches in these datasets might represent the total catches of the species in the year for the fleet and gear concerned or represent simply a sample of those. 

More details about the catch and effort information available and the way in which the above text files might be read can be found in CE_Reference.xlsx