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Short Citation:
Office for Coastal Management, 2024: Nationwide Automatic Identification System 2014,

Item Identification

Title: Nationwide Automatic Identification System 2014
Status: Completed
Publication Date: 2016-04-13

The 2014 United States Automatic Identification System Database contains vessel traffic data for planning purposes within the U.S. coastal waters. The database is composed of 216 self-contained File Geodatabases (FGDB). Each FGDB represents one month of data for a single UTM zone. The UTM zones represented cover the entire United States and include 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, and 20. Each FGDB consists of one feature class, four tables, and two relationship classes. The Broadcast point feature class contains the position reports, which have been pre-filtered to a one-minute time step. The Voyage table contains elements of the static data reports that are updated for each ship voyage. The Vessel table contains elements of the static data reports that are specific to a particular vessel. The BaseStations table lists the base stations collecting data for a particular month/UTM zone. The AttributeUnits table contains a list of units for each of the attribute fields in the Broadcast, Voyage, and Vessel tables. The BroadcastHasVessel relationship class relates the broadcast points to the vessel table records. The BroadcastHasVoyage relationship class relates the broadcast points to the voyage table records. The Broadcast feature class and the Voyage, Vessel, and BaseStation tables each contain the UTM zone, year, and month in the file name.


To support ocean planning activities pursuant to the Executive Order Regarding the Ocean Policy to Advance the Economic, Security, and Environmental Interests of the United States, the Energy Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act.

Supplemental Information:

Bureau Code: 006:48, Program Code: 006:055


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
ISO 19115 Topic Category
ISO 19115 Topic Category
None coastal
None planning
None renewable energy

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
None Exclusive Economic Zone
None Outer Continental Shelf
None Territorial Sea

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: Map (digital)
Distribution Liability:

Data Set Credit: U.S. Coast Guard Navigation Center, Bureau of Ocean Energy Management, NOAA Office for Coastal Management

Support Roles

Point of Contact

CC ID: 650992
Date Effective From: 2016-04-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 650997
W° Bound: -180
E° Bound: -60
N° Bound: 75
S° Bound: 15

Extent Group 1 / Time Frame 1

CC ID: 650996
Time Frame Type: Range
Start: 2014-01-01
End: 2014-12-31

Spatial Information

Spatial Representation

Representations Used

Grid: No
Vector: Yes
Text / Table: No
Stereo Model: No
Video: No

Vector Representation 1

CC ID: 987326
Topology Level: Geometry Only
Complex Object Present?: No
Composite Object Present?: No
Curve Object Present?: No
Point Object Present?: Yes
Solid Object Present?: No
Surface Object Present?: No

Reference Systems

Reference System 1

CC ID: 987325

Coordinate Reference System

CRS Type: Geographic 2D
EPSG Code: EPSG:4269
EPSG Name: NAD83
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

zip downloads

Data Access Constraints:


Data Use Constraints:


Distribution Information

Distribution 1

CC ID: 706194
Download URL:

Activity Log

Activity Log 1

CC ID: 651039
Activity Date/Time: 2016-05-23

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 651038
Activity Date/Time: 2017-11-14

Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using '' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 717194
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Data Quality

Horizontal Positional Accuracy:

Compiled to meet 10 meters horizontal accuracy at 95% confidence level

Completeness Report:

Points were filtered to a one-minute time step before publishing the data. Vessel identification data was altered prior to distribution by encoding the MMSI numbers and removing the vessel name, IMO, and call sign information. Raw AIS file sizes for November and December were smaller than prior months in 2014, resulting in lower AIS record counts for these months.

Conceptual Consistency:

These data are logically consistent



Nationwide Automatic Identification System

CC ID: 650987
Contact Role Type: Originator
Contact Type: Organization
Contact Name: US Coast Guard Navigation Center
Extent Type: Range
Extent Start Date/Time: 2014-01-01
Extent End Date/Time: 2014-12-31
Citation URL:
Source Contribution:

Data received for the entire United States in a total of 447 daily files of AIS messages for the months of January through December. In many cases there were multiple raw files for each day. | Type of Source Media: disc

Process Steps

Process Step 1

CC ID: 650988

The data was divided spatially by UTM zone and aggregated temporally to monthly datasets using AISParser. The data was then converted to FGDB using the AIS data model created for this project and a custom script which implements AISParser and ArcObjects.

Process Date/Time: 2014-01-01 00:00:00
Source: Nationwide Automatic Identification System

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity AttributeUnits
Entity BaseStations
Entity Broadcast
Entity Vessel
Entity Voyage

Catalog Details

Catalog Item ID: 48845
GUID: gov.noaa.nmfs.inport:48845
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 15:55+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-05-30 18:09+0000
Metadata Record Published: 2019-01-24
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2019-01-24
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2020-01-24