19 June 2001
22 February 2005
Update:http://www.nga.mil/portal/site/dnc/
NIMA Digital Nautical Chart�
The Digital Nautical Chart� is produced by the National Imagery and Mapping Agency (NIMA) and is an unclassified, vector-based digital database containing maritime significant features essential for safe marine navigation. Initial data collection of the database is from a portfolio of approximately 5,000 nautical charts that will ultimately provide global marine navigation between 84� North latitude and 81� South latitude and support a variety of Geographic Information System applications.
NIMA has produced the DNC� to support worldwide navigation requirements of the U.S. Navy and U.S. Coast Guard. NIMA also intends to offer DNC� for public release through commercial distributors (NIMA does not intend to distribute DNC� to other than U.S. government agencies and other governments having data exchange agreements with NIMA). Public release of DNC� of foreign areas, where DNC� source data is subject to foreign copyright restrictions, must be contingent on agreement of the producer nation. Because of the need for these negotiations, public access to DNC� will be a gradual process extending over the next few years.
DOWNLOAD
DEMO
Full Utility Navigation Demonstration (FUND ) Version 2.5
BACKGROUND
DNC�
is a vector database of nautical features consisting of points, lines, and polygons.
These features have been collected individually and attributed so as to support
use by Geographic Information Systems and other scientific applications. DNC�
data requires system application software such as "direct read" software, which
provides for display without data manipulation, from commercial DNC�
display system developers or through use of NIMA�s Full Utility Navigation Demonstration
(FUND), developed in cooperation with the Navy, to demonstrate the display of
standard information generated from NIMA�s folio of paper charts. An important
design feature of DNC� is that it is a System Electronic Navigational
Chart (SENC), i.e., when used with direct read software there is no manipulation
or transformation of the data originating from NIMA.
PAPER
CHARTS TO ELECTRONIC CHARTS
The U.S.
Navy, with NIMA�s cooperation, has recently established a policy for its transition
from paper to electronic chart navigation using DNC�. The U.S. Navy
has mandated that the DNC� database comply with the content and functionality
of standards and specifications of the International Maritime Organizations
(IMO) and International Hydrographic Organization (IHO) for an Electronic Chart
Display and Information System (ECDIS). NIMA has adopted the IHO ECDIS symbology
and has begun working with U.S. Navy system developers to ensure DNC�
data meets the performance standards of U.S. Navy bridge systems (ECDIS-N).
Only the underlying data transfer format differs from that specified for ECDIS.
As this is transparent to the user, NIMA is seeking equivalency to the paper
chart through the U.S. Coast Guard and the International Hydrographic Organization.
FUTURE
APPLICATIONS
The
DNC� data is formatted for direct manipulation by military systems
to provide important data and systems interoperability. When interfaced with
appropriate navigation systems, DNC� will ultimately replace the
paper chart for safe navigation by ships of the U.S. Navy and the U.S. Coast
Guard. In the near future, similar application of DNC� of U.S. waters
is envisioned for civil ships employing commercial systems. The Department of
Defense has determined that the DNC� database shall be made available
for public use. NIMA is now evaluating its options for doing so and plans to
implement availability perhaps through partnerships with the private sector
or other means. It is planned that public sale of NIMA�s data on CD-ROM will
occur in phases after updating of regions within the database become available.
Updating of the U.S. waters is projected to begin at the end of 1999. The combination
of DNC� with the digital updating provided through NIMA will be a
significant advancement for the safety of marine navigation worldwide and the
protection of the environment. NIMA plans to complete initial DNC�
coverage by the end of 1999 and worldwide DNC� coverage by the year
2002, which will include additional data in the U.S. Great Lakes to support
the U.S. Coast Guard.
Questions concerning the Digital Nautical Chart (DNC�) and the Full Utility Navigation Demonstration (FUND) should be referred to:
National
Imagery and Mapping Agency (NIMA)
Office of Congressional and Public Liason
4600 Sangamore Road
Bethesda, Maryland 20816-5003
nima_news@nima.mil