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common/ship_sizes/RG_ship_sizes.txt

@@ -125,8 +125,52 @@ RG_graygoo_capitalship = {
 	combat_disengage_chance = 1.25
 	class = shipclass_military
 	construction_type = starbase_shipyard
+	potential_construction = {
+		OR = {
+			is_scope_type = starbase
+			AND = {
+				is_scope_type = megastructure
+				OR = {
+					is_megastructure_type = mega_shipyard_3
+					is_megastructure_type = mega_shipyard_restored
+				}
+			}
+		}
+	}
+
 	possible_construction = {
-		always = no
+		custom_tooltip = {
+			fail_text = starbase_citadel_trigger
+			OR = {
+				AND = {
+					is_scope_type = megastructure
+					OR = {
+						is_megastructure_type = mega_shipyard_3
+						is_megastructure_type = mega_shipyard_restored
+					}
+				}
+				AND = {
+					is_scope_type = starbase
+					has_starbase_size >= starbase_citadel
+				}
+			}
+		}
+		custom_tooltip = {
+			fail_text = starbase_colossal_yards_trigger
+			OR = {
+				AND = {
+					is_scope_type = megastructure
+					OR = {
+						is_megastructure_type = mega_shipyard_3
+						is_megastructure_type = mega_shipyard_restored
+					}
+				}
+				AND = {
+					is_scope_type = starbase
+					has_starbase_building = colossus_yards
+				}
+			}
+		}
 	}
 	combat_size_multiplier = 4
 	prerequisites = {
@@ -463,8 +507,8 @@ RG_graygoo_destroyer = {
 	enable_3dview_in_ship_browser = yes	#if yes, ship design will have a 3d view in the ship browser
 	is_designable = yes
 	default_behavior = line
-	prerequisites = {
-		"tech_gray_interdictor_4"
+	potential_country = {
+		has_tradition = tr_rg_nanotech_4
 	}
 	ship_roles = { screen gunship artillery brawler }
 	triggered_ship_roles = {