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 12 weeks was divided by 12 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.

Ship type groups (STG):

• 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

The field headings in the attribute table are as follows:

CELL_ID - ID of grid cell

Avg_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 vessels

Avg_STG_6 - Weekly average number of transits of Passenger vessels

Avg_STG_7 - Weekly average number of transits of Cargo vessels

Avg_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