Shipping vessel density grid

This dataset contains the average weekly shipping density for the whole of the UK at a 2km grid resolution. For each year, AIS datasets were s&led from the first seven days of each month, commencing with January, at two-month intervals. The total value for all 6 weeks was divided by 6 to determine the weekly average, therefore decimal values may occur for certain cells. The weekly average was also multiplied by 52 to provide the estimated annual average. The field headings in the attribute table are as follows: 0 - Unknown Vessels 1 - Non-Port service craft 2 - Port service craft 3 - Vessels engaged in dredging or underwater operations 4 - High Speed Craft 5 - Military or Law enforcement 6 - Passenger 7 - Cargo 8 - Tankers 9 - Fishing vessels 10 - Recreational vessels Week_Ave - Weekly Average Density Annual_Ave - Estimated annual density