How do you check the accuracy of ENC from the ECDIS?
How do you check the accuracy of ENC from the ECDIS? Once the M_QUAL is known, and the CATZOC zone is assigned to an area on the ENC, the navigator can view these symbols on the ENC usually in the ?All / Other? display function on their ECDIS. The greater the number of stars that appear in the symbol, the greater the level of accuracy for that area.
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