NOAA's ENC Direct to GIS web portal provides comprehensive
access to display, query, and download all available
NOAA ENC data in a variety of GIS/CAD formats for
non-navigational purposes using Internet mapping service
technology. An assembly of wires or fibres, or a wire
rope or chain which has been laid
underwater or buried beneath the
seabed (Hydrographic Service, Royal
Australian Navy)
Purpose:
NOAA ENC Direct to GIS Internet Mapping Service is designed
to allow for the visualization, querying and downloading of
NOAA's Electronic Navigational Chart's (NOAA ENC) data in common
Geographic Information System (GIS) formats.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010711
Ending_Date: Present
Currentness_Reference:
This layer is up to date with the latest
edition enc cells through publication date on site.
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.43
East_Bounding_Coordinate: 174.61
North_Bounding_Coordinate: 65.67
South_Bounding_Coordinate: 17.57
Keywords:
Theme:
Theme_Keyword_Thesaurus: Tri - Service Spatial Data Standard
Theme_Keyword: Environment/Hazard
Theme_Keyword: Hydrography
Theme_Keyword: Transportation
Theme_Keyword: Marine Navigation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Submarine Cable
Theme_Keyword: Regulated Area
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Oceans
Theme_Keyword: Transportation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: U.S. Exclusive Economic Zone
Place_Keyword: U.S. territories
Place_Keyword: U.S. waters
Access_Constraints: None.
Use_Constraints:
NOAA ENC Direct to GIS data is not intended for
navigational purposes. This data is provided for use in GIS software
packages for coastal planning and research.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration
(NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
The NOAA ENC Direct to GIS data is derived
from NOAA ENC's which conforms to the International Hydrographic
Organization Transfer Standard for Digital Hydrographic Data, Special
Publication S-57, ENC Product
Specification Edition 2.0.
Logical_Consistency_Report:
The NOAA ENC Direct data is derived from
NOAA ENC's which conforms to the International Hydrographic
Organization Transfer Standard for Digital Hydrographic Data, Special
Publication S-57, ENC Product Specification Edition 2.0. NOAA ENC
Direct to GIS data has added generalized nautical chart symbology to
aid in the visualization of this data.
Completeness_Report:
NOAA ENC Direct to GIS data represents current coverage of all ENC Charts.
The NOAA ENC Chart
Suite is not scheduled to be completed until 2010.
As new NOAA ENCs and NOAA ENC editions are created they will be added
to the NOAA ENC Direct to GIS
data on the first of every month.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The NOAA ENC Direct to GIS
data is derived from data that conforms to the International
Hydrographic Organization Transfer Standard for Digital Hydrographic
Data, Special Publication S-57, ENC Product Specification Edition
2.0.
Lineage:
Process_Step:
Process_Description:
The NOAA ENC database has been built from a
combination of charted information as well as original "source"
information. NOAA has compiled critical features such as channel
limits, aids to navigation, and obstructions from the original
documents that were used to put the feature on the paper chart. The
objective is to use the most accurate information for
features that are critical to the safety of navigation. NOAA uses a
number of sources in compiling NOAA ENCS including
U.S. Army Corps of Engineers surveys, drawings, and permits, U.S.
Coast Guard Local Notices to Mariner, National Imagery and Mapping
Agency Notices to Mariners, NOAA hydrographic
surveys, and the largest scale paper chart of an area. ENC Direct to
GIS data was created by transforming Approach and Harbor NOAA ENC
version 2 cells to ESRI's shapefile format using Safe Software's
Feature Manipulation Engine.
Process_Date: 200305 - present
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration
(NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
Contact_Position: NOAA ENC Direct to GIS Technical Contact
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Highway N/CS2
City: Silver Spring
State_or_Province: Maryland
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: 301-713-2645
Contact_Facsimile_Telephone: 301-713-4501
Contact_Electronic_Mail_Address: enc.gis@noaa.gov
Hours_of_Service: 0700-1500 EST
Contact_Instructions: E-mail is preferred
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System 1984
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The data provided through the NOAA ENC
Direct to GIS service is derived from electronic data that
conforms to the International Hydrographic Organization Transfer
Standard for Digital Hydrographic Data, Special Publication S-57, ENC
Product Specification Edition 2.0. The entity and attribute
descriptions are contained in the standard. The standard is available
from the IHO at <http://www.iho.shom.fr>.