sentences:  The 1706 Establishment established a desired set of principal dimensions for each "group" (i.e.size) of warship from the 40-gun fifth rate up to the 90-gun second rate (first rates and ships of less than 40 guns were not covered by the 1706 Establishment).As only the principal dimensions were specified, the design of individual ships remained with the Master Shipwright in each Dockyard; thus ships of the same number of guns built to this Establishment did not constitute a "class" in the modern sense of all being built to one design.