[TG] [TG11] Inconsistent Depth Sounder Performance

[Tom - Raymarine - Moderator]

Hello Paul,

My guess would be that the transducer has got some water in it. Unfortunately this is something the B744Vs are prone to doing if they haven't been installed according to the letter of the installation guide including the covering of the top and sides of the transducer housing with sealant. The earlier Airmar installation instructions didn't draw as much attention to this as the later revisions. If the speed has failed and now depth is unreliable (how about water temperature, does that also have problems? I would guess so) then I think this will be the cause.

Regards,
Tom