If you want to know what happened to the other two ships, I think this sums it up!
I know that it is a different mod, but i am pretty sure that the two modding teams support the combined lore here, and there was discussion about linking the two areas (Sirius and Pelaides) together, but i believe both partys want the two mods to stand alone (don't take this as fact though, I am an uneducated dimwit!)