Our Map and Data Archives - Global Fishing Watch Publicly sharing knowledge about human activity at sea Tue, 15 Oct 2024 09:57:29 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.3 https://globalfishingwatch.org/wp-content/uploads/cropped-gfwisologo512x512-1-1-32x32.png Our Map and Data Archives - Global Fishing Watch 32 32 Where does Global Fishing Watch get the data from? https://globalfishingwatch.org/faqs/where-does-the-data-come-from/ Fri, 10 May 2019 10:13:49 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7471 We get our data from a combination of commercial and government sources. Learn more.

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]]> Is every point I see on the map fishing activity? https://globalfishingwatch.org/faqs/is-every-point-i-see-on-the-map-fishing-activity-2/ Wed, 10 Aug 2022 16:12:12 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=20063 When you select an ‘Apparent fishing effort’ layer within the side panel, every grid cell on the map is displaying the intensity of apparent fishing activity as recognized by our algorithm. To explore other types of human activity, select the ‘Vessel presence’ layer on the left sidebar.

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]]> Is the information I’m seeing in the Global Fishing Watch map real-time? https://globalfishingwatch.org/faqs/is-the-information-im-seeing-in-the-map-in-real-time/ Fri, 10 May 2019 10:16:39 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7479 The AIS data you see spans from January 1, 2012 to 72 hours prior to the present time. VMS data is published with a delay agreed by the specific government.

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]]> How can I obtain Global Fishing Watch data or code? https://globalfishingwatch.org/faqs/how-can-i-obtain-global-fishing-watch-data-or-code/ Fri, 10 May 2019 10:17:21 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7481 To download our data directly from the Global Fishing Watch map, click on an area of interest, then select the ‘Download visible activity layers for this area’ icon within the pop-up. To learn more, watch this video tutorial. If you would like continuous, rather than static, data, you can explore our APIs here. Alternatively, download […]

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]]> Can I download raw AIS data? https://globalfishingwatch.org/faqs/can-i-download-raw-ais-data/ Fri, 10 May 2019 10:18:03 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7483 The raw AIS data we use is commercial data and we cannot make it freely available to the public. However, we have created a sample dataset of labeled anonymized AIS data that can be used to train fishing prediction models.

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]]> Can I download raw VMS data? https://globalfishingwatch.org/faqs/can-i-download-raw-vms-data/ Fri, 10 May 2019 10:18:36 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7485 The VMS data remains under the ownership of the respective national authorities and we cannot release it publicly beyond displaying it on our map.

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]]> Will this tip off the fishing industry to where all the fish are? https://globalfishingwatch.org/faqs/will-this-tip-off-the-fishing-industry-to-where-all-the-fish-are/ Fri, 10 May 2019 10:21:05 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7487 No. Some commercial fishing fleets are already using sophisticated technology such as helicopters, tracking beacons, fish-finding sonar and even fish forecasts based on satellite data to find and catch fish. Global Fishing Watch shows apparent fishing activity; it doesn’t predict where fish are likely to be in the future. The near real time lag for […]

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]]> Does the Global Fishing Watch map include small scale fishing? https://globalfishingwatch.org/faqs/how-will-global-fishing-watch-track-small-scale-fishing/ Fri, 10 May 2019 10:21:55 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7490 Global Fishing Watch believes that transparency of fishing activity is key to achieving sustainable global fisheries. In line with our mission to create and publicly share knowledge about human activity at sea, the first versions of our map have focused on fishing as the most widespread human activity, and on industrial fishing as the sector […]

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]]> Why are vessel names sometimes garbled or blank? https://globalfishingwatch.org/faqs/why-are-vessel-names-sometimes-garbled-or-blank/ Fri, 10 May 2019 10:22:52 +0000 http://globalfishingwatch.stage.pixeledeggs.com/?post_type=ht_kb&p=7492 Vessel names are taken directly from the AIS message of vessel broadcasts. Transmitters sometimes have errors or are not always properly configured. In some cases, we are able to match vessels to fishing registries and will use the name from there.

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]]> What are the different vessel classes used by Global Fishing Watch? https://globalfishingwatch.org/faqs/what-are-the-different-vessel-classes-used-by-global-fishing-watch/ Fri, 21 May 2021 21:03:46 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=19079 Understanding the different types of vessels that operate on the ocean is a key step towards successful monitoring of human activity—cargo ships have different social and environmental implications than fishing vessels and the impacts of different types of fishing vessels, like trawlers and drifting longlines, can differ as well.  Learn more about Global Fishing Watch […]

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]]> What is the difference between the apparent fishing effort layer and the fishing events in the vessel track? https://globalfishingwatch.org/faqs/difference-between-fishing-effort-and-fishing-events/ Wed, 14 Jul 2021 16:30:04 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=22174 Why is there a difference? Within the Global Fishing Watch AIS processing, every AIS position is estimated as potential ‘fishing’ or not. Fishing effort is intended to act as a high level summary of the summed hours of potential fishing for a given vessel or area over time. However, when looking at the individual voyage […]

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]]> When I see a grid cell with fishing effort that crosses an EEZ, does it mean there was fishing activity inside the EEZ? https://globalfishingwatch.org/faqs/fishing-effort-that-crosses-an-eez-was-fishing-activity-inside-the-eez/ Thu, 15 Jul 2021 16:30:20 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=22176 Not necessarily. The resolution of each grid cell changes with the zoom level, you can see the resolution in the legend of each apparent fishing effort layer (for example in the screenshot, 120 km2 is the approximate grid cell area at equator). Each grid cell adds fishing effort for the area of the cell, so […]

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]]> Why do some MMSI’s downloadable fishing effort data add up to more than 24 hours? https://globalfishingwatch.org/faqs/why-do-some-mmsis-downloadable-fishing-effort-data-add-up-to-more-than-24-hours/ Mon, 25 Apr 2022 22:24:56 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=25623 Sometimes the downloadable fishing effort data for an individual MMSI adds up to more than 24 hours per day. This is due to how Global Fishing Watch assigns time to AIS positions, which is based on the time since the vessel’s previous AIS position. However, due to uncertainty, we never assign a single position more […]

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]]> What are the sources of Global Fishing Watch reference layers? https://globalfishingwatch.org/faqs/reference-layer-sources/ Mon, 12 Dec 2022 20:43:03 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=30246 Global Fishing Watch products include the geographic boundaries of areas of interest to enable spatial analysis of fishing activity throughout the world’s oceans as reference layers. These reference layers are incorporated from external sources, often the organizations that define and manage the geographic boundaries or, if unavailable, then the leaders in maintaining documentation of the […]

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]]> Updates to data sources in the Global Fishing Watch platform https://globalfishingwatch.org/faqs/data-source-updates/ Tue, 17 Jan 2023 13:52:14 +0000 https://globalfishingwatch.org/?post_type=ht_kb&p=30846 Global Fishing Watch has established a new partnership with Spire Global, providing even more precise and consistent AIS activity data through the use of ExactView satellites. As of January 1, 2023, Global Fishing Watch data is generated using both Spire and Spire Global satellites and will no longer use OrbComm data. Users should be aware […]

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