Adoption of 8” TFT LCD color display enables better resolution. WGS-84 geodetic system automatically enables all the geodetic lines to automatically convert. Smooth conversion to other displays prevents the map from disappearing while ZOOM IN/OUT. Simultaneously adjustable LCD back light for night navigation. Available to use SD Card for user's data backup and program update. Highly efficient for fishing work by marking fishing zones. Latest electronic chart with wide range of updated technology offering a variety of information such as slime, rock, depth, trench, EEZ line, underwater cable line and the like. Combination with SAMYUNG autopilot system ofters perfect autopiloting. Straight pursuit and ZOOM IN/OUT enabling users to make exact calculation of fish group at the sea bottom(NAVIS 800F) Use of 2(tow) frequencies in common offering better judgment on minute fish groups.(NAVIS 800F)