Hi Mateo!
Waterlinked IMU is a problem to calibrate, it keeps drifting.
https://waterlinked.com/forums/topic/questions-on-waterlinked-utilisation-on-a-boat/
Only way for us is to use external heading (and positioning)
One solution is: Mounting Waterlink on a moving boat - #9 by ScottM
Integration via python, or WL solution: https://waterlinked.com/forums/topic/water-linked-underwater-gps-nmea-bridge/
Bo