Datamarine Transducers

[jmillsaia]

I have a 1988 Tartan 31 and am interested in replacing the knotmeter and depth with either Navman or Raymarine instruments. Does anyone know what the existing diameter of the holes used for the DM units? Same as Raymarine / Navman?

[Valdare]

I don't know the exact size only that they are interchangeable with no alteration. I replaced my Data Marine Corrithian units with Raymarine. The only thing you need to check is the Raymarine tranducer was longer
than the Data Marine. I had to move the location due to the transducer being to long. Did't think it would be prudent to be sticking out above the floor boards. :-))

John