To use the Tide Graph screen, you need to use the CASIO MOMENT SETTER+ smartphone app (Android only) to specify the point (port) whose tide information you want to view. See “TOOL Button and TOOL App Settings” for details.
The information the watch displays on the Fishing Time Screen is calculated based on your current location. It is not affected by the watch’s point (port) setting. This means that Fishing Time Screen information can be used for both saltwater and fresh water fishing.
Keep in mind that the Tide Graph Screen shows information about the currently selected point (port), while Fishing Time Screen information is based on your current location.