The vast majority of those ships were built in the Venetian Arsenal as some of its roofed shipbuilding docks were enlarged to allow construction of sailing vessels.
According to the classification used in the Venetian navy, those primo rango ('first-rate') vessels comprised every two-decked ship armed with more than 62 guns.
After the Peace of Passarowitz in 1718 and the decline of Venetian naval strength, their number was greatly reduced, and from the second half of the 18th century their roles were taken by newly built frigates.
[2] The distinction between secondo and terzo rango ('third-rate') Venetian ships of the line was based more on roles that on main armament.
As with the second-rate vessels, after Passarowitz the number of ships of this type was slowly diminished and substituted with newly built frigates.