Lessee. I'm assuming you're also not counting the OTT and 158th modeldumps, since those are on the Wiki. And you said you were looking for capital ships, rather than fighters or bombers.
*dig dig*
Well, I found a Terran "galleon" model in the ITHOV VP that i'd completely forgotten about, but that's not Shivan...
*dig* ... a reskinned Shivan Orion from System Madness...
*dig dig*
The only other completed Shivan POF that I can find in my archive is the GunRahu, which is a Rahu gas miner that acts sort of as a Shivan Mjolnir-type thing. I'll upload that to FSMods now in case anyone wants it.