1.0 DCPLUS 20230907 22000200 20251103 22000200 https://www.arcgis.com/sharing/rest/content/items/fa9a5800b0ee4855af8b2944ab1e07af/info/thumbnail/ago_downloaded.png https://www.arcgis.com/home/item.html?id=fa9a5800b0ee4855af8b2944ab1e07af fa9a5800b0ee4855af8b2944ab1e07af Feature Service https://services9.arcgis.com/weJ1QsnbMYJlCHdG/arcgis/rest/services/PortWatch_chokepoints_database/FeatureServer Chokepoints Additional information on the 28 identified major gloabl chokepoints. <div><div>Concepts: </div><div><ul><li>Chokepoint: the full list of chokepoints we cover and associated additional information. </li><li>Vessel Count: we use real-time data on vessel movements—Automatic Identification System (AIS) signals of vessels— to calculate the yearly average number of ships passing through the chokepoint, over the timeframe 2019-2024. These yearly averages are available by 5 main ship categories (container, dry bulk, general cargo, ro-ro and tanker) plus the total. </li><li>Top Industries: dominant traded industries based on the volume of goods estimated to flow through the chokepoint. Note that this is not based on official statistics.</li></ul></div><div>Variables: </div><div><ul><li>portid: chokepoint unique id. </li><li>portname: chokepoint name. </li><li>lat: latitude of the chokepoint location.</li><li>lon: longitude of the chokepoint location.</li><li>vessel_count_total: yearly average number of all ships transiting through the chokepoint. Estimated using AIS data between 2019-2024. The total is calculated over the sum of vessel_count_container, vessel_count_dry_bulk, vessel_count_general_cargo, vessel_count_roro and vessel_count_tanker. </li><li>vessel_count_container: yearly average number of containers transiting through the chokepoint. Estimated using AIS data between 2019-2024. </li><li>vessel_count_dry_bulk: yearly average number of dry bulk carriers transiting through the chokepoint. Estimated using AIS data between 2019-2024. </li><li>vessel_count_general_cargo: yearly average number of general cargo ships transiting through the chokepoint. Estimated using AIS data between 2019-2024. </li><li>vessel_count_roro: yearly average number of Ro-Ro ships transiting through the chokepoint. Estimated using AIS data between 2019-2024. </li><li>vessel_count_tanker: yearly average number of tankers transiting through the chokepoint. Estimated using AIS data between 2019-2024. </li><li>industry_top1: first dominant traded industries based on the volume of goods estimated to flow through the chokepoint.</li><li>industry_top2: second dominant traded industries based on the volume of goods estimated to flow through the chokepoint.</li><li>industry_top3: third dominant traded industries based on the volume of goods estimated to flow through the chokepoint.</li></ul></div></div><div><div>How to Cite?</div><div>These datasets are based on raw AIS data from the United National Global Platform and estimates by the PortWatch team based on the methodology described in the paper. The recommended citation is: “Sources: UN Global Platform; IMF PortWatch (<a href='https://portwatch.imf.org/' style='box-sizing:border-box; background-color:transparent;' target='_blank' rel='nofollow ugc noopener noreferrer'>portwatch.imf.org</a>).”</div></div> https://www.imf.org/external/terms.htm -79.76723825 140.3532743 55.50784043000001 -34.92728556 1 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 fa9a5800b0ee4855af8b2944ab1e07af https://services9.arcgis.com/weJ1QsnbMYJlCHdG/arcgis/rest/services/PortWatch_chokepoints_database/FeatureServer Feature Service EPSG