This dataset contains the average weekly shipping density for the whole of the UK at a 2km grid resolution. For 2015, AIS datasets were sampled from the first seven days of each month, commencing with January,at monthly intervals.The total value for all 12weeks was divided by 12to 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. Ship type groups (STG):0 - Unknown Vessels1 - Non-Port service craft2 - Port service craft3 - Vessels engaged in dredging or underwater operations4 - High Speed Craft5 - Military or Law enforcement6 - Passenger7 - Cargo8 - Tankers9 - Fishing vessels10 - Recreational vesselsThe field headings in the attribute table are as follows: CELL_ID - ID of grid cellAvg_STG_0 - Weekly average number of transits of Unknown Vessels Avg_STG_1 - Weekly average number of transits of Non-Port service craft Avg_STG_2 - Weekly average number of transits of Port service craft Avg_STG_3 - Weekly average number of transits of Vessels engaged in dredging or underwater operations Avg_STG_4 - Weekly average number of transits of High Speed Craft Avg_STG_5 - Weekly average number of transits of Military or Law enforcement vesselsAvg_STG_6 - Weekly average number of transits of Passenger vesselsAvg_STG_7 - Weekly average number of transits of Cargo vesselsAvg_STG_8 - Weekly average number of transits of Tankers Avg_STG_9 - Weekly average number of transits of Fishing vessels Avg_STG_10 - Weekly average number of transits of Recreational vessels Avg_Total_STG - Weekly average number of all vessel transits Weekly_Avg_STG_Total - Weekly average number of all vessel transits Yearly_Avg_STG_Total - Estimated annual density of all vessel transits
