The International maritime Organization has accepted the Electronic Chart Display and INformation System, or ECDIS, as an acceptable substitute for the paper nautical chart. However, the electronic nautical charts (ENC) used by ECDIS are resource-intensive and time consuming to produce. Thus, there are few ENCs currently available, and it appears that full ENC coverage is still a few years away. In the interim, mariners hav been turning to electronic charting systems (ECS) which use scanned raster images of nautical charts.
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