Advance
Military Shipbuilding
The expansion of our fishing industry has also led to an expansion in shipbuilding. We have a ready pool of trained shipwrights at hand to expand our own production process.
NorwayCountrypotentialAdvance tree
The game files don’t say where this goes: it has no requires, so the game places it in the 
Discovery tree itself.
Modifiers
Definitionin_game/common/advances/country_NOR.txt:48
49content_priority = 500