Has anyone managed to come across the OST for this?

wow, that's an oldie. if it is the anime i think it is.
"searching for Odin...my love!"

sorry, don't have it, but maybe it has a different Japanese name that you could search by?

Seen it, good stuff.

Yep,

オーディーン 光子帆船スターライト
Odin - Koshi Hansen Starlight
Odin: Photon Space Sailer Starlight

I got the DVD, but the soundtrack is very elusive, I've found nowhere that sells it or otherwise.