CAUTION - QUALITY OF BATHYMETRIC DATA
The areas represented by the object M_QUAL (Quality of data) are approximate
due to generalizing for clarity. Caution is advised, particularly for nearshore
navigation or voyage planning. M_QUAL represents areas of uniform quality of
bathymetric data. The CATZOC (Category of zone of confidence in data) attribute
of M_QUAL provides an assessment of the overall zone of confidence.