Shipdata-overrides.plist
From Elite Wiki
shipdata-overrides.plist is added with oolite 1.72.
It loads after all the shipdata.plist data are read in. It contains the same keys as the normal shipdata.plist. Whenever it finds a match with a key that also exists in shipdata.plist of any oxp, it overwrites the entries defined in shipdata-overrides.plist but leaves the other as they were. e.g.
"adder-player" = { max_energy = 95; thrust = 25; };
Will change the max_energy and the thrust of the ship adder-player. All other data remain original.
See OXP_howto for a overview about the other plists.