Ahoy, Bera...
Would help to know just what version of FotRS you're rolling with.... (That is, if it is, indeed the FotRS mod set that you're asking about)
Now, if it is v1.46 or the 1.6X preview version... there should be a optional mod (mod name: 452_MoonlightzSonarLines) you need to activate through jsgme, that will give back to contacts on the nav map, "tails" & I think, also their vision range circle for merchies... & vision/& sound detection range info to them warships that are so inclined to be outfitted with such gear.
That mod set, should already include the shipname.sil or shipname_sil info in there... or is that,
.shp or _shp...
*shakes head to clear out the cobwebs* Any who, at any rate... as far as I know of, it should already be in there.
1 of the other, more knowledgeable shipmates here... can feel free to jump in & confirm/refute My info here...
If spot on, then... hope that this info helps clarify things for ya.
M. M.