| Abstract |
The original shipping density dataset contains density of commercial ships, fishing ships, oil & gas, passenger ships, and leisure vessels. The raster layers were created using IMF's analysis of hourly AIS positions received between Jan-2015 and Feb-2021 and represent the total number of AIS positions that have been reported by ships in each grid cell with dimensions of 0.005 degree by 0.005 degree (approximately a 500m x 500m grid at the Equator). The AIS positions may have been transmitted by both moving and stationary ships within each grid cell, therefore the density is analogous to the general intensity of shipping activity. |
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