You're welcome, anyway!
Your copy of SHIII must be different from mine, and from that of the person who wrote the article I referred to in my post, because for *us* even on 100% realism with every option turned on, as soon as we point our UZO or periscope at a contact the Notepad immediately gives a partial ID.
Here are a couple of screenshots to illustrate my point, in case it was too confusing before:
And now with the names hidden:
As you can see, even with all the options checked, the UZO still gives away the target. This can be abused after a fashion by "scanning the horizon" and noting every spec which causes the notepad to update.
This mod would make the game even more realistic, which some people like myself would find very enjoyable indeed.