Data

Identification of ‘dark vessels’

Using bright lights to reveal the 'dark' fleet Christopher Elvidge with the U.S. National Oceanic and Atmospheric Administration (NOAA)’s Earth Observation Group writes about matching night-time imagery with monitoring data from fishing vessels to shed new light on the ‘dark’ fleet. The challenges with tracking vessels Vessel tracks from Automatic Identification System (AIS) and Vessel [...]

By | 2018-06-08T05:39:52+00:00 June 8th, 2018|Data, Research and analysis, Research partner program|

Satellite tracking shows the economics of much high seas fishing does not add up

Kristina M. Gjerde, Senior High Seas Advisor. IUCN Global Marine and Polar Programme As the countdown continues to September’s historic first round of United Nations treaty talks on the conservation and sustainable use of marine biodiversity  in the high seas, science and technology are shedding increasingly compelling light on what is currently happening [...]

By | 2018-06-06T14:18:37+00:00 June 6th, 2018|Data, Fisheries, News and views, Research and analysis|

Adding Nano-Satellite Data Doubles Our Resolution

Today, we are pleased to announce that, through a partnership with Spire Global, Inc, we have doubled the amount of data we use to identify and track nearly 60,000 commercial fishing vessels on the world’s oceans. Publicly broadcast Automatic Identification System (AIS) messages received by satellites and ground-based receivers comprise the largest source of data in the [...]

By | 2018-04-04T11:29:30+00:00 November 1st, 2017|Data|

What Can We See When AIS Signals Disappear?

We are often asked about how Global Fishing Watch can be effective when vessel captains can simply turn off their AIS. And our answer has always been, “they have to turn it back on sometime—especially when entering port, and intentional blackouts raise a red flag.” Our recent analysis of fleet activity around the Argentine EEZ [...]

By | 2018-04-04T11:43:45+00:00 July 24th, 2017|Data|

AIS Gaps by Fleet

AIS GAPS BY FLEET: January 1, 2017 - July 10,2017 On the maps below, each point indicates the start of a gap in AIS signals from a fishing vessel lasting more than 24 hours. [Read about our AIS gap analysis around the Argentine Exclusive Economic Zone] Number of gaps by flag state:

By | 2018-04-04T11:43:58+00:00 July 20th, 2017|Data|

Beta Release 2.0: Nearly Doubling our Database of Commercial Fishing Vessels

Since our launch in September, we have added 25,000 more fishing vessels to our database. Our new Beta release 2.0 now includes 60,000 fishing vessels. Although the number of fishing boats using AIS and the number of satellites receiving their signals have been steadily rising around the world, the vast majority of our gains have [...]

By | 2018-04-04T11:29:44+00:00 May 18th, 2017|Data|

AIS for Safety and Tracking: A Brief History

The maritime Automatic Identification System (AIS) is a radio communications system by which vessels continuously broadcast their identity and position over public airwaves using unencrypted VHS radio signals. When it was developed almost 20 years ago, its primary purpose was to increase safety at sea: ships needed a better way to “see” each other and [...]

By | 2018-01-05T11:39:06+00:00 March 31st, 2017|Data|

86,490 Points on a Map: All Potential Transshipments

5 years, over 86,000 potential transshipments In early 2017, we released an original report based on analysis of our data that revealed remarkable new insights about what goes on between fishing vessels at sea. The machine learning platform we developed found that over the past five years, there were more than 86,000 potential [...]

By | 2017-12-27T22:41:34+00:00 March 2nd, 2017|Data|

Making the Cut–Creating Our List of Fishing Vessels

This post has been adapted from “Updated Vessel Lists 0.2”  which appeared on our Data Blog for researchers and software engineers by David Kroodsma. Automating the process of identifying all industrial-scale fishing activity in near-real time on a global scale through AIS data is something that’s never been done. Inventing something new often means first [...]

By | 2017-12-27T22:49:01+00:00 December 30th, 2016|Data|

Identifying Transshipment From the Data

When two ships meet to transfer goods, it is called transshipment. In the fisheries industry, it is sometimes legal in ports, but usually illegal out at sea where the practice can’t be monitored. [You can read more about it here]. Transshipment can facilitate the mixing of illegal or unreported catch with legal catch, making it [...]

By | 2018-01-05T12:15:48+00:00 November 18th, 2016|Data|

What Does an AIS Message Look Like Anyway?

Automatic Identification System (AIS) messages are transmitted over radio waves. The system was designed, in part, so that vessels could “see” the positions of nearby ships on a monitor and avoid collisions. These radio signals are received by satellites and used for many monitoring purposes. Each boat can broadcast a distinct message as often as every two [...]

By | 2018-01-05T12:18:05+00:00 November 8th, 2016|Data|

Where are the Whalers?

Last week, a visitor to our site asked if Global Fishing Watch can be used to track whaling ships. The short answer is yes, sometimes. At the moment, our machine learning algorithms are being designed to classify three major types of fishing activity—trawling, longlining and purse seining—but some whaling vessels report themselves as “fishing vessels,” [...]

By | 2018-01-05T12:22:22+00:00 October 12th, 2016|Data|

Teaching Machines to Tell Us About Fishing

None of what we’re doing at Global Fishing Watch would be possible without the advancements in computing power that have occurred in recent years. The volume of data we work with would have been overwhelming in the past. In one random sample, we observed more than 127,000 vessels over a 24-hour period broadcasting the Automatic [...]

By | 2018-01-05T12:28:05+00:00 September 28th, 2016|Data|

What Ports Can Tell Us

Ports provide an important source of information to help us combat Illegal fishing and understand the science and economics of global fisheries. “They serve as the interface between land and sea for fishing vessels,” says Wessley Merten, our data and fisheries analyst at Oceana. “Wherever there’s a port, there’s an interaction. Whether it be offloading [...]

By | 2018-01-05T12:32:00+00:00 September 22nd, 2016|Data|

Characterizing Gaps in the Data

Just a few years ago the very idea of collecting billions of radio signals from ocean-going vessels all around the world and creating a global map of their activity in near-real time would have been unthinkable. But today’s cloud computing technology allows us to do amazing things with huge amounts of data. […]

By | 2017-12-22T11:31:31+00:00 September 20th, 2016|Data|
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