AIS Vessel Tracks 2015

Title:	AIS Vessel Tracks 2015
Status:	Completed
Publication Date:	2018-10-31
Abstract:	Vessels traveling in U.S. coastal and inland waters frequently use Automatic Identification Systems (AIS) for navigation safety. The U.S. Coast Guard collects AIS records using shore-side antennas. These records have been filtered and converted from a series of points to a set of track lines for each vessel. Vessels can have one or more tracks of any length, and can be separated by gaps due to intermittent loss of the AIS signal. Tracks will not necessarily start or stop at a well defined port, or when a vessel is not in motion. Vessel tracks are an efficient and spatially unbiased indicator of vessel traffic.
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:	The native coordinate system for this layer is NAD 1983 (ESPG: 4269). Please note: all MarineCadastre.gov data served by the NOAA Office for Coastal Management and hosted through Esri REST services are in the WGS 1984 Web Mercator Auxiliary Sphere (EPSG: 3857) projection.

Keywords

Theme Keywords

Theme Keywords
Thesaurus	Keyword
Global Change Master Directory (GCMD) Science Keywords	EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT
ISO 19115 Topic Category	environment
ISO 19115 Topic Category	oceans
ISO 19115 Topic Category	planningCadastre
ISO 19115 Topic Category	transportation
UNCONTROLLED
None	AIS
None	Automatic Identification System
None	coastal zone management
None	environment
None	ocean planning
None	oceans
None	planning
None	planningCadastre
None	position report
None	static data report
None	transportation
None	vessel
None	vessel traffic
None	voyage

Spatial Keywords

Spatial Keywords
Thesaurus	Keyword
Global Change Master Directory (GCMD) Location Keywords	CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
Global Change Master Directory (GCMD) Location Keywords	OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA
UNCONTROLLED
None	Atlantic Ocean
None	East Coast
None	Exclusive Economic Zone
None	Great Lakes
None	Gulf of Mexico
None	Outer Continental Shelf
None	United States
None	UTM Zone 1
None	UTM Zone 10
None	UTM Zone 11
None	UTM Zone 14
None	UTM Zone 15
None	UTM Zone 16
None	UTM Zone 17
None	UTM Zone 18
None	UTM Zone 19
None	UTM Zone 2
None	UTM Zone 20
None	UTM Zone 3
None	UTM Zone 4
None	UTM Zone 5
None	UTM Zone 6
None	UTM Zone 7
None	UTM Zone 8
None	UTM Zone 9
None	West Coast

Physical Location

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:	NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html
Data Set Credit:	CREDIT: MarineCadastre.gov, NOAA Office for Coastal Management, Bureau of Ocean Energy Management ORIGINATORS: NOAA Office for Coastal Management, NOAA Office for Coastal Management;

Support Roles

Data Steward

CC ID: 786970

Date Effective From:	2018-06
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

Metadata Contact

CC ID: 786972

Date Effective From:	2018-06
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

Point of Contact

CC ID: 786971

Date Effective From:	2018-06
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: 786974

W° Bound:	-132
E° Bound:	-60
N° Bound:	51.5
S° Bound:	10.7

Access Information

Security Class:	Unclassified
Data Use Constraints:	NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html

Security Class:

Unclassified

Data Use Constraints:

NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html

Distribution Information

Distribution 1

CC ID: 1121564

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

Distribution 2

CC ID: 1475423

Download URL:	https://ocmgeodatastor1.blob.core.windows.net/marinecadastre/ais/aistrack/index-aistrack.html
Distributor:

Data Quality

Completeness Report:	All known records acquired from the Nationwide Automatic Identification System which includes approximately 58 U.S. ports and 11 coastal areas out to 24 nautical miles offshore. For further information on vessel reporting requirements and participation in the AIS, see carriage requirements in the Code of Federal Regulations, Title 33. Significant null values exist in some fields principally as a result of vessel operator practices.
Conceptual Consistency:	Content was acquired from original sources – no additional testing was done to cross reference or confirm otherwise the field or geometry values from other sources. All known records acquired from the Nationwide Automatic Identification System which includes approximately 58 U.S. ports and 11 coastal areas out to 24 nautical miles offshore. For further information on vessel reporting requirements and participation in the AIS, see carriage requirements in the Code of Federal Regulations, Title 33. Significant null values exist in some fields principally as a result of vessel operator practices.

Completeness Report:

All known records acquired from the Nationwide Automatic Identification System which includes approximately 58 U.S. ports and 11 coastal areas out to 24 nautical miles offshore. For further information on vessel reporting requirements and participation in the AIS, see carriage requirements in the Code of Federal Regulations, Title 33. Significant null values exist in some fields principally as a result of vessel operator practices.

Conceptual Consistency:

Content was acquired from original sources – no additional testing was done to cross reference or confirm otherwise the field or geometry values from other sources. All known records acquired from the Nationwide Automatic Identification System which includes approximately 58 U.S. ports and 11 coastal areas out to 24 nautical miles offshore. For further information on vessel reporting requirements and participation in the AIS, see carriage requirements in the Code of Federal Regulations, Title 33. Significant null values exist in some fields principally as a result of vessel operator practices.

Lineage

Sources

2015 Nationwide Automatic Identification System

CC ID: 786964

Publish Date:	2015-12-31
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.

AIS Vessel Tracks 2015

CC ID: 786963

Publish Date:	2015-12-31
Citation URL:	https://marinecadastre.gov/data
Citation URL Name:	Source Online Linkage
Citation URL Description:	URL where the source data were originally accessed.
Source Contribution:	AIS Vessel Tracks 2015: Filtering of AIS messages in NMEA format to an 1 minute interval and conversion of message to track line features by vessel type and ocean basin.

Process Steps

Process Step 1

CC ID: 786965

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 2017 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:	2018-01-15 00:00:00

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 2017 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:

2018-01-15 00:00:00

Child Items

Rubric scores updated every 15m

	Type	Title
	Entity	2015 AIS Vessel Tracks

Type

Title

Entity

2015 AIS Vessel Tracks

Catalog Details

Catalog Item ID:	54117
GUID:	gov.noaa.nmfs.inport:54117
Metadata Record Created By:	Anna Verrill
Metadata Record Created:	2018-10-15 18:18+0000
Metadata Record Last Modified By:	Jesse Brass
Metadata Record Last Modified:	2026-04-14 15:40+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

Item Identification

Keywords

Theme Keywords

Spatial Keywords

Physical Location

Data Set Information

Support Roles

Data Steward

Metadata Contact

Point of Contact

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

Access Information

Distribution Information

Distribution 1

Distribution 2

Data Quality

Lineage

Sources

2015 Nationwide Automatic Identification System

AIS Vessel Tracks 2015

Process Steps

Process Step 1

Child Items

Catalog Details