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OCM Metadata Library > MarineCadastre > AIS >

AIS Vessel Tracks 2018

Data Set (DS) | Office for Coastal Management (OCM)
GUID: gov.noaa.nmfs.inport:59569 | Updated: August 21, 2024 | Published / External

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Summary

Item Identification

Keywords

Physical Location

Data Set Info

Support Roles

Extents

Spatial Info

Access Info

Distribution Info

Tech Environment

Data Quality

Lineage

Child Items

Catalog Details

Summary

Short Citation
Office for Coastal Management, 2025: AIS Vessel Tracks 2018, https://www.fisheries.noaa.gov/inport/item/59569.
Full Citation Examples

Abstract

A vessel track shows the location and characteristics of commercial and recreational boats as a sequence of positions transmitted by an Automatic Identification System (AIS). AIS signals are susceptible to interference and this can result in a gap within a vessel track. The distribution, type, and frequency of vessel tracks are a useful aid to understanding the risk of conflicting uses within a certain geographic area. The vessel track positions in this data set are collected and recorded from land-based antennas as part of a national network operated by the U.S. Coast Guard.

Distribution Information

https://marinecadastre.gov/data/

Marine Cadastre Data Registry
https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018Atlantic.zip
https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018GreatLakes.zip
https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018GulfOfMexico.zip
https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018Pacific.zip
https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018WestCoast.zip
https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTransitCounts2018.zip

Use Constraints:

For coastal and ocean planning

Controlled Theme Keywords

oceans, transportation

Child Items

Type

Title

Entity

2018 AIS Vessel Tracks

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov

Extents

Geographic Area 1

+−

Leaflet | © OpenStreetMap

-168° W, -60° E, 50° N, 15° S

Time Frame 1
2018-01-01 - 2018-12-31

Item Identification

Title:	AIS Vessel Tracks 2018
Status:	Completed
Publication Date:	2020-06-23
Abstract:	A vessel track shows the location and characteristics of commercial and recreational boats as a sequence of positions transmitted by an Automatic Identification System (AIS). AIS signals are susceptible to interference and this can result in a gap within a vessel track. The distribution, type, and frequency of vessel tracks are a useful aid to understanding the risk of conflicting uses within a certain geographic area. The vessel track positions in this data set are collected and recorded from land-based antennas as part of a national network operated by the U.S. Coast Guard.
Purpose:	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

Keywords

Theme Keywords

Thesaurus

Keyword

ISO 19115 Topic Category

oceans

ISO 19115 Topic Category

transportation

UNCONTROLLED

None

coastal

None

planning

None

renewable energy

Spatial Keywords

Thesaurus

Keyword

UNCONTROLLED

None

Exclusive Economic Zone

None

Outer Continental Shelf

None

Territorial Sea

None

United States of America

Physical Location

City:	Charleston
State/Province:	SC

Data Set Information

Data Set Scope Code:	Data Set
Data Set Type:	Geodatabase
Maintenance Frequency:	None Planned
Data Presentation Form:	Map (digital)
Entity Attribute Overview:	OBJECTID, MMSI, TrackStartTime, TrackEndTime, VesselType, Length, Width, Draft, DurationMinutes, VesselGroup
Distribution Liability:	https://www.marinecadastre.gov/about/disclaimer.html
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: 906199

Date Effective From:	2020-06-23
Date Effective To:
Contact (Organization):	NOAA Office for Coastal Management (NOAA/OCM)
Address:	2234 South Hobson Ave Charleston, SC 29405-2413
Email Address:	coastal.info@noaa.gov
Phone:	(843) 740-1202
URL:	https://coast.noaa.gov

Extents

Currentness Reference:	Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 906214

W° Bound:	-168	Leaflet © OpenStreetMap
E° Bound:	-60
N° Bound:	50
S° Bound:	15

Extent Group 1 / Time Frame 1

CC ID: 910555

Time Frame Type:	Range
Start:	2018-01-01
End:	2018-12-31

Spatial Information

Spatial Representation

Representations Used

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

Vector Representation 1

CC ID: 910147

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

Reference Systems

Reference System 1

CC ID: 910148

Coordinate Reference System

CRS Type:

Geographic 2D

EPSG Code:

EPSG:4269

EPSG Name:

NAD83

▾ See Full Coordinate Reference System Information

Datum Name:

North American Datum 1983

Ellipsoid:

GRS 1980

Semimajor Axis:

6378137.0

Flattening Ratio:

298.257222101

Axis: Geodetic Latitude

Order:	1
Abbreviation:	Lat
Units:	degree
Orientation:	north

Axis: Geodetic Latitude

Order:	1
Abbreviation:	Lat
Units:	degree
Orientation:	north

Axis: Geodetic Longitude

Order:	2
Abbreviation:	Lon
Units:	degree
Orientation:	east

Axis: Geodetic Longitude

Order:	2
Abbreviation:	Lon
Units:	degree
Orientation:	east

Access Information

Security Class:	Unclassified
Data Use Constraints:	For coastal and ocean planning

Distribution Information

Distribution 1

CC ID: 1121567

Download URL:	https://marinecadastre.gov/data/
Distributor:
Description:	Marine Cadastre Data Registry

Distribution 2

CC ID: 906201

Download URL:	https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018Atlantic.zip
Distributor:

Distribution 3

CC ID: 906202

Download URL:	https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018GreatLakes.zip
Distributor:

Distribution 4

CC ID: 906203

Download URL:	https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018GulfOfMexico.zip
Distributor:

Distribution 5

CC ID: 906218

Download URL:	https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018Pacific.zip
Distributor:

Distribution 6

CC ID: 906204

Download URL:	https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTracks2018WestCoast.zip
Distributor:

Distribution 7

CC ID: 1195902

Download URL:	https://marinecadastre.gov/downloads/data/ais/ais2018/AISVesselTransitCounts2018.zip
Distributor:

Technical Environment

Description:	Microsoft Windows, ArcGIS Pro

Data Quality

Horizontal Positional Accuracy:

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

Completeness Report:

a) The geographic extent of these data include the conterminous United States, Hawaii, U.S. Virgin Islands and Puerto Rico.

b) Presence, absence, and contiguity of a track is dependent on the distance and temporal filters applied in the track building algorithm. Parameters for these data were one nautical mile and 30 minutes.

Conceptual Consistency:

These data are logically consistent

Lineage

Sources

2018 Nationwide Automatic Identification System

CC ID: 906211

Publish Date:	2018-12-31
Source Contribution:	Daily compressed log files containing original AIS messages in NMEA format for the months of January through December for the United States. Authoritative Vessel Identification Service (AVIS) Vessel Catalog 2018-01-04.

Process Steps

Process Step 1

CC ID: 906212

Description:

1. Filter the raw NMEA data to a one-minute sample rate and select a subset of fields using MarineCadastre.gov NMEA to SQL Server processing tools

2. Load filtered records to an SQL Server 2018 database using MarineCadastre.gov NMEA to SQL Server processing tools

3. Conduct quality and completeness check using logging results from the filter and loading process

4. Update the IMO, CallSign, VesselName, Length, Width, VesselType, and Draft from United States Coast Guard AVIS where original AIS values are missing

5. Add a new vessel type code to each record fragment that originated from the United States Coast Guard AVIS

6. Develop track line features directly from the SQL Server database using a customize version of the MarineCadastre.gov Track Builder 3.1 (64-bit version) for each month of broadcast records and for each ocean basin, using a filter setting of 30 minutes and 1 mile

7. Added field for vessel type group and populated based on the vessel type code to vessel group mapping described in attribute metadata

8. Added field for track line duration, and calculated the time in minutes between the start and end time for each track feature

9. Performed visual quality and consistency checks, and removed vessel tracks that were clearly invalid (on land) or beyond the ocean basin

10. REPAIR GEOMETRY to remove features with null geometry

Process Date/Time:

2020-03-01 00:00:00

Child Items

Rubric scores updated every 15m

Type

Title

Entity

2018 AIS Vessel Tracks

Catalog Details

Catalog Item ID:	59569
GUID:	gov.noaa.nmfs.inport:59569
Metadata Record Created By:	Jesse Brass
Metadata Record Created:	2020-05-11 13:28+0000
Metadata Record Last Modified By:	Jesse Brass
Metadata Record Last Modified:	2024-08-21 14:13+0000
Metadata Record Published:	2020-06-08
Owner Org:	OCM
Metadata Publication Status:	Published Externally
Do Not Publish?:	N
Metadata Last Review Date:	2020-06-08
Metadata Review Frequency:	1 Year
Metadata Next Review Date:	2021-06-08