With the new chart plotter has come a transom mounted transducer that works the sonar, down vision and also the water depth and water temperature. This will be mounted to the stern of the boat below the waterline.
Now the only problem with this is routing the cable from the transducer to the sonar module which will be mounted in the engine bay and then routing the cabling from the sonar module to the chart plotter which will be on the dashboard.
The second length of cabling from the sonar module to the chart plotter we are not so concerned about but the first length of cable from the transducer to the sonar module requires quite a hefty hole to be drilled through the transom of the boat so that the connector can thread through and into the engine bay. Not something we are really looking forward too it does have to be said. We need to make that hole water tight again!