SH4 mission editor
 

I have noticed that when I open a tanker random layer in the editor that some of the classes in the group properties give the unit class as Yamato class BB. Is that normal?

most likely its just random errors and you will find them in many files in the game.

there are tons of errors everywhere in the game and ubi never gave the devs time to do what they needed to do, much less time to error check files unless they caused obvious glitches in the game code

This is with Traveller's mods + TMO + RSRDC. Check it out sometime. I'm not sure if it makes a differance. Something makes me want to change it though.

I just changed them all to generic tankers. We'll see if it makes any differance. So far so good though.