Stratos 486 FS transducer ?

[Chuck - Raymarine - Moderator]

Bob,

This hull appears to have two steps prior to the transom along with several strakes. Transducers installed aft of such features would be expected to typically be exposed to an aerated flow of water when operating on plane and at speed approaching plane. These conditions would typically prohibit the fishfinder from maintaining bottom contact during such periods of operation. However, when the vessel comes off plane and once again resumes operation at trolling speed, then the fishfinder should re-acquire bottom contact. Given the location of the steps, it is recommended that the transducer be mounted to the transom with the expectation that the fishfinder will not be able to maintain bottom contact while operating at speeds above trolling speed (i.e. the speeds at which fishfinders typically generate imagery of fish targets).