Ok, managed to find the mod units I wanted.
Windows search isn't helpful so I have to use Dos to search for it. Hope this will help some gamer looking for specific mod units.
(1) In Windows, right click mouse at the lower left hand of Windows to call up the menu (I don't know what that menu is called), select Search.
(2) In the Search box, type "CMD.exe" (type in without the quotes") to go into Dos prompt.
(3) In Dos, change to your mods directory (or folder) using the "CD" command.
Example "CD Supreme Commander - Forged Alliance" (type in without the quotes").
(4) Type in "Findstr /s /i advanced battleship *.bp >Unitsname.txt" (type in without the quotes").
Explanation
The "/s" will search all folder and its sub-folder.
The "/i" will make a non case-sensitive string search.
The "advanced battleship" is the string we look for.
The *.bp is the file to look for that specific string.
The ">Unitsname.txt" will save all the matching string of folder, file and strings into this Unitsname.txt
Then use notepad to open this Unitsname.txt file to read the where the units are.