 Despite these setbacks, the Admiralty had achieved much greater increases in the sizes of ships than with the previous establishments.Furthermore, the ship types of pre-1741 were restored, with the 64-gun vessel returned to 70 guns, and the 58-gun vessels to 60.Earlier establishments had merely laid out the principal dimensions for each type of warship from the 100-gun first rates down to the 20-gun sixth rates, although with effect from the 1719 Establishment this was augmented by defining the sizes and thicknesses of wood to be used in the construction.