Airmar Speed/Depth Transducer Install & Thru-Hull Skin Fitting From Raymarine T70216 Pack - Pt01

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An edited version of this video is now hosted here: • Airmar Depth and Speed...
How do you swap out through-hull fittings with different diameter transducer housings without any instructions?
Well, we had to do just that after finally deciding to replace our old NMEA 0183, B&G transducers and dials with Raymarine NMEA2000 transducers and the I70 multifunction display from the Raymarine T70216 Pack.
We didn't want to drill any more holes in the hull, so the original through-hull seemed the best place to install the new transducer. However, installation meant first removing the old 45mm plastic housing and widening the hole by 5mm to make way for the 50mm housing to fit a multi function 'Airmar intelligent tri' speed / depth / temperature transducer. A fibreglass conical 'mount' or wedge also had to be made for the hull of the boat to hold it parallel to the sea bed.
In the next maintenance blog (pt02) I swap out the old B&G mast head unit, for the Raymarine short arm wind vane transducer. See Pt02 here: • Raymarine NMEA2000 Mas...
In the final maintenance blog (Pt03) I replace the old B&G transducer controller with the Raymarine ITC-5 transducer controller, and also replacing the old B&G dials with a single Raymarine I70 multifunction display unit. See Pt03 here: • Raymarine ITC-5 Transd...
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