The stock SH4 game is like that from day one:
Of more importance to that ship is the UnitType=109 lines in the Roster cfg file (left) and the Sea folder (right), as compared to what the Type= lines are in the mis files for it:
Again, that is the stock game with the UnitType=109, whereas it looks like KSDII has it set at UnitType=103.
There are several other ships in the Stock game like that, including the player submarine Porpoise. Not confusing at all to see all of the different file names in a folder, now is it?... lol
