DSM250 compatible transducer for steel hull

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Bridlewilde,

The DSM250 had not been designed for use with tilted element transducers. As such, use of tilted element transducer with the DSM250 may not yield optimum fishfinding performance. It is recommended that a stainless steel fairing block transducer (ex. A102121 SS270) be used for this application. Oddly, Raymarine's SS270 web page specifies that it not be used with metal hulls ... stainless steel is generally material of choice for transducers installed though aluminum or steel hulls. Airmar, Inc. produces the 50/200kHz fishfinder transducers for Raymarine, Inc., and Airmar's installation instructions for the SS270 indicate that it may be used with metal hulls if installed with a fairing block. It correspondingly recommended that Gemeco (Airmar's US distributor) be contacted for any restrictions or additional guidance for installing this SS270 on a steel hull.