GPSMAP 527xs with transom mount transducer, includes map world base pre-installed. Independently of the type of installation (to the evenness, fixed or with gyratory support) it is visible so much by day as by night. It is very easy to use. Compatibility with CHIRP.
Complete your equipment with this practical support.
For a correct visualization of your GPS, install the support on the rudder, turn it or tilt it, in addition the locking mechanism secures the equipment while you are moving.
It is easily disassembled so you can remove it when you need it.