Table 1. Acoustic equipment for fish stock estimation

No Equipment type Function
1 Acoustics: Portable Scientific Echosounder SIMRAD EY-60, 120 kHz transducer The main tool for estimating fish stocks
2 One Gienset Portable Unit, 1,000 Watt Power source during the research
3 Wooden boat, 3 GT engine Equipment carrier, installation site acoustic instrument beside the boat body
4 Laptop, memory > 2 GB, hard drive > 80 GB Data acquisition during operation in the boat.
5 Personal computer (PC), memory > 2 GB, hard drive > 80 GB Post-processing data
6 ER60 software Processing echogram data into data-threshold (data acquisition).
7 SONAR-4 software Advanced data processing, stored in ASCII
8 Microsoft excel software Tabulating data
GT, gross tone.