<?xml version="1.0" encoding="UTF-8"?>
<inport-metadata xmlns:xs="http://www.w3.org/2001/XMLSchema"
                 version="1.11"
                 source="https://www.fisheries.noaa.gov">
   <item-identification>
      <catalog-item-id>64828</catalog-item-id>
      <title>AIS Vessel Transit Counts 2020</title>
      <catalog-item-type>Data Set</catalog-item-type>
      <metadata-workflow-state ccs-id="9">Published / External</metadata-workflow-state>
      <parent-catalog-item-id>55360</parent-catalog-item-id>
      <parent-title>Automatic Identification System (AIS)</parent-title>
      <parent-catalog-item-type>Project</parent-catalog-item-type>
      <status>Completed</status>
      <publication-date>2021-09-28</publication-date>
      <abstract>Automatic Identification Systems (AIS) are a navigation safety device that transmits and monitors the location and characteristics of many vessels in U.S. and international waters in real-time. In the U.S. the Coast Guard and industry collect AIS data, which can also be used for a variety of coastal planning purposes. NOAA and BOEM have worked jointly to re-task and make available some of the most important records from the U.S. Coast Guard's national network of AIS receivers. This dataset represents annual vessel transit counts summarized at a 100 m by 100 m geographic area. A single transit is counted each time a vessel track passes through, starts, or stops within a 100 m grid cell.</abstract>
      <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.</purpose>
      <supplemental-information>Bureau Code: 006:48, Program Code: 006:055
</supplemental-information>
   </item-identification>
   <keywords>
      <keyword controlled="Yes">
         <keyword-type>Theme</keyword-type>
         <thesaurus>ISO 19115 Topic Category</thesaurus>
         <keyword>oceans</keyword>
      </keyword>
      <keyword controlled="Yes">
         <keyword-type>Theme</keyword-type>
         <thesaurus>ISO 19115 Topic Category</thesaurus>
         <keyword>planningCadastre</keyword>
      </keyword>
      <keyword controlled="Yes">
         <keyword-type>Theme</keyword-type>
         <thesaurus>ISO 19115 Topic Category</thesaurus>
         <keyword>transportation</keyword>
      </keyword>
      <keyword controlled="Yes">
         <keyword-type>Spatial</keyword-type>
         <thesaurus version="23.3">Global Change Master Directory (GCMD) Location Keywords</thesaurus>
         <keyword identifier="753f915c-70d4-49e1-9bd5-83e75f461e30">CONTINENT &gt; NORTH AMERICA &gt; UNITED STATES OF AMERICA</keyword>
      </keyword>
      <keyword controlled="No">
         <keyword-type>Theme</keyword-type>
         <keyword>coastal</keyword>
      </keyword>
      <keyword controlled="No">
         <keyword-type>Theme</keyword-type>
         <keyword>planning</keyword>
      </keyword>
      <keyword controlled="No">
         <keyword-type>Theme</keyword-type>
         <keyword>renewable energy</keyword>
      </keyword>
      <keyword controlled="No">
         <keyword-type>Spatial</keyword-type>
         <keyword>Exclusive Economic Zone</keyword>
      </keyword>
      <keyword controlled="No">
         <keyword-type>Spatial</keyword-type>
         <keyword>Outer Continental Shelf</keyword>
      </keyword>
      <keyword controlled="No">
         <keyword-type>Spatial</keyword-type>
         <keyword>Territorial Sea</keyword>
      </keyword>
   </keywords>
   <physical-location>
      <organization>Office for Coastal Management</organization>
      <city>Charleston</city>
      <state-province>SC</state-province>
   </physical-location>
   <data-set-information>
      <data-set-scope-code>Data Set</data-set-scope-code>
      <maintenance-frequency>None Planned</maintenance-frequency>
      <data-presentation-form>Map (digital)</data-presentation-form>
      <distribution-liability>https://www.marinecadastre.gov/about/disclaimer.html</distribution-liability>
      <data-set-credit>U.S. Coast Guard Navigation Center, NOAA Office for Coastal Management, Bureau of Ocean Energy Management</data-set-credit>
   </data-set-information>
   <entity-attribute-information partial-listing="No" total-count="0"/>
   <support-roles>
      <support-role cc-id="1071415" in-effect="Yes">
         <support-role-type>Point of Contact</support-role-type>
         <from-date>2021-09-28</from-date>
         <contact-type>Organization</contact-type>
         <contact-name>NOAA Office for Coastal Management</contact-name>
         <contact-noaa-acronym>NOAA/OCM</contact-noaa-acronym>
         <contact-email>coastal.info@noaa.gov</contact-email>
         <contact-address>2234 South Hobson Ave</contact-address>
         <contact-address-city>Charleston</contact-address-city>
         <contact-address-state>SC</contact-address-state>
         <contact-address-zip>29405-2413</contact-address-zip>
         <contact-phone-number>(843) 740-1202</contact-phone-number>
         <contact-url>https://coast.noaa.gov</contact-url>
         <contact-url-description>NOAA Office for Coastal Management Home Page</contact-url-description>
         <contact-url-function>Online Resource</contact-url-function>
      </support-role>
   </support-roles>
   <extents>
      <currentness-reference>Publication Date</currentness-reference>
      <extent cc-id="1071426">
         <geographic-areas>
            <geographic-area cc-id="1071428">
               <west-bound>-168</west-bound>
               <east-bound>-60</east-bound>
               <north-bound>50</north-bound>
               <south-bound>15</south-bound>
            </geographic-area>
         </geographic-areas>
         <time-frames>
            <time-frame cc-id="1071427">
               <time-frame-type>Range</time-frame-type>
               <start-date-time>2020-01-01</start-date-time>
               <end-date-time>2020-12-31</end-date-time>
            </time-frame>
         </time-frames>
      </extent>
   </extents>
   <spatial-information>
      <spatial-representation>
         <representations-used>
            <grid>Yes</grid>
            <vector>No</vector>
            <text-table>No</text-table>
            <tin>No</tin>
            <stereo-model>No</stereo-model>
            <video>No</video>
         </representations-used>
      </spatial-representation>
      <reference-systems>
         <reference-system>
            <coordinate-reference-system>
               <crs-type>Geographic 2D</crs-type>
               <epsg-code>EPSG:4269</epsg-code>
               <epsg-name>NAD83</epsg-name>
               <datum-name>North American Datum 1983</datum-name>
               <ellipsoid>GRS 1980</ellipsoid>
               <semimajor-axis>6378137</semimajor-axis>
               <flattening-ratio>298.257222101</flattening-ratio>
               <axes>
                  <axis>
                     <order>1</order>
                     <name>Geodetic Latitude</name>
                     <abbreviation>Lat</abbreviation>
                     <units>degree</units>
                     <orientation>north</orientation>
                  </axis>
                  <axis>
                     <order>1</order>
                     <name>Geodetic Latitude</name>
                     <abbreviation>Lat</abbreviation>
                     <units>degree</units>
                     <orientation>north</orientation>
                  </axis>
                  <axis>
                     <order>2</order>
                     <name>Geodetic Longitude</name>
                     <abbreviation>Lon</abbreviation>
                     <units>degree</units>
                     <orientation>east</orientation>
                  </axis>
                  <axis>
                     <order>2</order>
                     <name>Geodetic Longitude</name>
                     <abbreviation>Lon</abbreviation>
                     <units>degree</units>
                     <orientation>east</orientation>
                  </axis>
               </axes>
            </coordinate-reference-system>
         </reference-system>
      </reference-systems>
   </spatial-information>
   <access-information>
      <security-class>Unclassified</security-class>
      <data-use-constraints>For coastal and ocean planning
</data-use-constraints>
   </access-information>
   <distribution-information>
      <distribution cc-id="1121572">
         <download-url>https://marinecadastre.gov/data</download-url>
         <description>Marine Cadastre Data Registry</description>
      </distribution>
      <distribution cc-id="1071416">
         <download-url>https://ocmgeodatastor1.blob.core.windows.net/marinecadastre/ais/aistransit/index-aistransit.html</download-url>
      </distribution>
   </distribution-information>
   <technical-environment>
      <description>Microsoft Windows, ArcGIS Pro, Azure SQL</description>
   </technical-environment>
   <data-quality>
      <accuracy>Untested</accuracy>
      <horizontal-positional-accuracy>Compiled to meet 10 meters horizontal accuracy at 95% confidence level</horizontal-positional-accuracy>
      <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.

c) This is an aggregate data product derived from input files that were segmented generally by ocean basin. A gap can be seen along the seam line of the input files. The gap distance should never exceed the distance a vessel has traveled between two consecutive position records.</completeness-report>
      <conceptual-consistency>These data are logically consistent</conceptual-consistency>
   </data-quality>
   <lineage>
      <lineage-sources>
         <lineage-source cc-id="1071424">
            <citation-title>AIS Vessel Tracks 2020</citation-title>
            <contact-type>Organization</contact-type>
            <contact-name>NOAA Office for Coastal Management</contact-name>
            <contact-role-type>Originator</contact-role-type>
            <publish-date>2020-12-31</publish-date>
            <citation-url>https://marinecadastre.gov/data/</citation-url>
            <citation-url-name>Source Online Linkage</citation-url-name>
            <citation-url-description>URL where the source data were originally accessed.</citation-url-description>
            <source-contribution>Annual vessel tracks built using the Track Builder Pro 1.0 tool with time and distance parameters of 30 minutes and 1 nm. Vessel type definitions derived from the original NMEA record and the Authoritative Vessel Identification Service (AVIS) Vessel Catalog </source-contribution>
         </lineage-source>
      </lineage-sources>
      <lineage-process-steps>
         <lineage-process-step cc-id="1071425">
            <sequence-number>1</sequence-number>
            <description>1.	Select tracks for each vessel type from the 2020 AIS Vessel Tracks geodatabase by groups as defined in the AIS Vessel Type and Group Codes, Marine Cadastre

2.	Calculate transit count grids using the MarineCadastre.gov AIS Vessel Transit Counter tool for each month of tracks and for each ocean basin

3.	Merge monthly transit count grids into an annual transit count grid

4.	Merge all 4 ocean basin/regional rasters into one raster using the mosaic to new raster tool
</description>
            <process-date-time>2021-06-01T00:00:00</process-date-time>
            <source-citation cc-id="1071424">AIS Vessel Tracks 2020</source-citation>
         </lineage-process-step>
      </lineage-process-steps>
   </lineage>
   <catalog-details>
      <guid>gov.noaa.nmfs.inport:64828</guid>
      <metadata-record-created-by pers-id="20144">Jesse Brass</metadata-record-created-by>
      <metadata-record-created>2021-06-30T12:44:38</metadata-record-created>
      <metadata-record-last-modified-by pers-id="20144">Jesse Brass</metadata-record-last-modified-by>
      <metadata-record-last-modified>2026-04-14T15:54:24</metadata-record-last-modified>
      <record-published>2021-09-28</record-published>
      <owner-organization>Office for Coastal Management</owner-organization>
      <owner-organization-acronym>OCM</owner-organization-acronym>
      <owner-organization-address/>
      <owner-organization-address-city/>
      <owner-organization-address-state/>
      <owner-organization-address-zip/>
      <owner-organization-address-country/>
      <owner-organization-phone/>
      <owner-organization-url/>
      <owner-organization-business-hours/>
      <owner-organization-group-id>1002</owner-organization-group-id>
      <publication-status>Public</publication-status>
      <best-available-metadata>No</best-available-metadata>
      <is-do-not-publish>No</is-do-not-publish>
      <metadata-last-review-date>2021-09-28</metadata-last-review-date>
      <metadata-review-frequency>1 Year</metadata-review-frequency>
      <metadata-next-review-date>2022-09-28</metadata-next-review-date>
   </catalog-details>
</inport-metadata>
