From: El Paso, TX
ORIGINAL: Big B
EDIT: It appears that the Wright and Saipan are not in the Data Base, and therefore do not appear in the game.
On the "Wright", I'm not sure what you are referring to. AV Wright definitely is in many (if not all) databases, and I'm not aware of any other ships with that name.
As for CVL Saipan, "it's complicated"
I maintain a game folder that is 100% vanilla, i.e. only the base game plus the v1.26a downloads from Matrix. In that system, you are correct, the CVL Saipan class does not exist in the Scenario #1 database. Or any of the other "standard" scenarios I looked at.
Even so, that vanilla game folder definitely includes a shipside named AnSide0244.bmp, which is a carrier, not a battleship.
Digging a little further (i.e in my "working game" folder), I discovered the CVL Saipan class (using the 0244.bmp file) is included in the DaBigBabes-A database (and perhaps in others, but that's the only one I've installed). Keep in mind that all ships required for the DaBabes mods are included in the Matrix 1.126a update, which means the "overwrite" will affect anybody who installs your direct replacement download AND is playing a DaBabes mod.
Long story short, it's a problem so you should make that fix.