It means the ship was made in origanal freelancer. It is not a Discovery made ship. The ships from 'vanilla' freelancer are made up of serveral parts, and when an area dammage weapon, like missiles, ammo based torps, and mines, hit them, they take dammage based on the ammount of parts hit. For example, the avenger, a vanilla style ship, will die when hit with a single nuklear mine. The same hit will do about 1/6- 1/7 hull damage agianst a raven claw, which is NOT a vanilla ship.
BTW, swap you mesquito in for a train cd. it is worlds better, regardless of the info card.
There is nothing worth living for, unless it is worth dying for. -Elizabeth Elliott