Coverage in shallow water

[Chuck - Raymarine - Moderator]

Fotomaker,

Unlike the Dragonfly Pro displays which support both CHIRP (conical) sonar and Downvision, the Wi-Fish exclusively supports DownVision. As indicated within the previously referenced FAQ, the multiplier for determining the DownVision side to side axis (60 degrees) dimension at depth is 1.154 * Depth

.... side to side axis dimension at 5' depth = 1.154 * 5' = 5.77'
.... side to side axis dimension at 10' depth = 1.154 * 10' = 11.54'
.... side to side axis dimension at 30' depth = 1.154 * 30' = 34.62'
.... side to side axis dimension at 100' depth = 1.154 * 100' = 115.4'
.... side to side axis dimension at 500' depth = 1.154 * 500' = 577'


As indicated within the previously referenced FAQ, the multiplier for determining the DownVision fore to aft axis (1.4 degrees) dimension at depth is 0.01222. The thin, but relatively wide sonar imagery slices produced by the DownVision elements are combined to produce the detailed DownVision sonar image.:

.... fore to aft axis dimension at 5' depth = 0.01222 * 5' = 0.0611'
.... fore to aft axis dimension at 10' depth = 0.01222 * 10' = 0.1222'
.... fore to aft axis dimension at 30' depth = 0.01222 * 30' = 0.3665'
.... fore to aft axis dimension at 100' depth = 0.01222 * 100' = 1.222''
.... fore to aft axis dimension at 500' depth = 0.01222 * 500' = 6'