Digital nautical chart (DNC).

Bibliographic Details
Corporate Author:	United States. National Geospatial-Intelligence Agency
Format:	Government Document Map Database
Language:	English
Published:	[Bethesda, MD] : National Geospatial-Intelligence Agency, 2011-
Subjects:	Nautical charts. Electronics in navigation > Maps. World maps. Electronics in navigation. Maps.
Online Access:	https://purl.fdlp.gov/GPO/gpo6424