Definitionin_game/common/scripted_triggers/location_triggers.txt:150
151OR = {
152has_building_with_at_least_one_level = dock 153has_building_with_at_least_one_level = dry_dock 154has_building_with_at_least_one_level = shipyard 156has_building_with_at_least_one_level = naval_base }