Shipyard-overrides.plist
From Elite Wiki
shipyard-overrides.plist is added with oolite 1.72.
It loads after all the shipyard data are read in. It contains the same keys as the normal shipyard.plist. Whenever it finds a match with a key that also exists in shipyard.plist of any oxp, it overwrites the entries defined in shipyard-overrides.plist but leaves the other as they were. e.g.
"adder-player" = { chance = 0.35; techlevel = 6; };
Will change the techlevel and the chance of appearance of the ship adder-player. All other data remain original
See OXP_howto for a overview about the other plists.