Member States are required to describe the methodologies used for estimating each economic variable, including quality aspects, in their national programmes.

In addition, we request that information on the sampling strategy used and achieved sample rate are transmitted along with the parameter values during the uploading procedure.

The achieved sample rate is defined as the number of units (i.e. vessels) successfully sampled divided by the total number of vessels in the fleet segment, and reported as a percentage (%).

The sampling strategy can be either random or non random. For the uploading acronyms related to each type, and for census data, see sampling strategy  definition. Alternatively, you can access this information by clicking on the 'Definitions' tab.