How to calibrate STW from transducer?

[LifePart2]

Now that you have migrated to NMEA2000 the analog transducers are connected to the ITC-5 and all calibration settings are stored in the ITC-5.

Ah, didn't know that. That answers some questions. I will see if I can track down a i70 somewhere.

Thanks guys!

Noel

[Peeew]

I’ll only add to the comment about depth calibration as the rest has been covered. I operate a number of boats in shallow areas. All too often the depth has been set to “under keel” and usually has some added “safety cushion” of a foot or two. When poking around in shallow water the actual depth is what I look for knowing charted depth and state of tide. When I start seeing negative depth and I’m still moving all I can do is ignore the instrument as useless and go by visual. This defeats the purpose and reduces the safety that was intended. I calibrate using a rope and weight in the water to set the depth to match. I know what depth I’m looking for and the actual depth is the most useful.