Electronic Navigational Charts (ENC) are unique in nautical charting in that the user can define what level of detail they want to see on the computer screen. There are three IHO categories of display modes the user can choose from (Base Display, Standard Display, and Other); on top of those, the user can choose depth area colors, hide or show soundings, lights, ATON labels, among other choices. These details are not the subject at hand here. We cover them in our textbook on ENC.
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Here I want to review the display modes, and make a specific configuration proposal for cleaner displays in areas with shipping lanes or other Traffic Separation Schemes.
Below is a sample of the Base Display mode. This is officially described as not adequate for navigation; it is intended to represent objects that must remain in place for all other displays.