SONAR: Mega Down Imaging
455kHz:440-500kHz depth: 107m
MEGA: 1075-1150kHz depth: 38m
Dual Spectrum CHIRP
Full Mode: 150-220 kHz
Narrow Mode: 180-240 kHz @ 25º
Wide Mode: 140-200 kHz @ 42º Depth: 366m
Marintek Catalogue 2025
Protackle Catalogue 2018
Sorensen's Guide of Powerboats