And there is another ship in the Triangle that is very similar( just missing the huge NCC on the side).The warp engines sure look federation-esque
That design sure looks like similar to this one.....
http://www.ex-astris-scientia.org/schematics/tas-delta-triangle1.jpg
Some fan done schematics say that's a sensor package. So maybe this this a science vessel. We never saw the Ariel in "The Eye of the Beholder" (script says SS but the crew uniforms are the standard Starfleet delta so it probably was really U.S.S.) maybe it had similar elements. Or maybe this is a type of drone ship that Starfleet sent to investigate the phenomenon. Does't really look like there's windows or anything.
