This dataset contains the average weekly shipping density for the whole of the UK at a 2km² grid resolution. For 2011, AIS datasets were sampled from the first seven days of the month, commencing with January, at two-month intervals. The total value for all 6 weeks sampled was then divided by 6 to determine the weekly average (note that this process has resulted in decimal values occurring for certain cells). The weekly average was then 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
