Draft review of size data from Indian Ocean longline fleets, and its utility for stock assessment

This is an incomplete draft report on a project to review the procedures used to collect and process longline size data for use in IOTC stock assessments. Further work will be carried out after the WPTT data preparation meeting and the report updated for presentation at the WPTT stock assessment meeting. This draft report is provided to help inform discussion about data preparation for the 2021 yellowfin stock assessment. All conclusions and recommendations expressed herein should be regarded as preliminary.