Technical Discussion
IENCs have very consistent features, e.g. scale, accuracy, and update frequency, to a greater level than current chart books produced by the Corps districts. The electronic products will also follow the international S-57 exchange format for consistency with efforts in other countries and compatibility with Electronic Chart Display and Information Systems (ECDIS) and electronic chart systems (ECS).
However, inland navigation in the U.S. has some fundamental distinctions from coastal, deep-draft navigation, which could translate to unique application and specialized documents for the future IENCs. IENCs now encompass the Mississippi, Ohio and other major river systems.
Read more about this topic: Inland Electronic Navigational Charts
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