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scale minimum (SCAMIN)

An ENC object attribute that specifies the minimum scale that an object can be viewed on the screen. If SCAMIN for a depth contour object on a specific compilation scale chart is 1:17,999, for example, then at display scale 1:17,000 this object shows, but zoom out to 1:20,000 and the object will disappear. See Role of SCAMIN in ENC

Shoreline constructions do not have a SCAMIN, and most rocks do not have one, and hence are shown on all scales and all display modes.

Most ECS and ECDIS allow the user to turn off this feature, or to custom scale it.


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