you need to be more specific about the region you are interested on. I don't know about the Indian EEZ. Within the SIOFA (Southern Indian Ocean Fisheries Agreement) Regulation Area, VMS data are being compiled. The creation of a database to produce SIOFA's fishing footprint is under construction and member states have different protocols for VME encounters. Beyond certain thresholds there is a move-on rule. No surveys have been carried out to investigate SIOFA VMEs, but some data might have been collected by Observer Programs of the member states.