We have developed and are using several GIS datasets that are not directly related to fishing but that are necessary to properly identify fishing. These datasets are available here.
Distance to Shore
This dataset provides, at one kilometer resolution, the distance from shore of every point in the ocean. We use this raster to calculate the distance from shore for every AIS position message in our database.
Distance to Port
This dataset is the same as the distance to shore raster, but instead includes the distance to port. This dataset is still under development, largely because we are still developing our port database.
We are developing a port database based on where vessels with AIS anchor for longer than 48 hours. We plan to combine this data with the World Port Index.