The Sailor Path seems to be broken right now, at least on the Steam version. If you choose to stay with Belmont after arriving in Rahayal, you end up getting an Exception error. Specifically, the game can't find 'SailorPath4'.
Viewing post in The Survival of Sarah Rose comments
Thanks, I'll make sure to try and fix that on the next update. It's technically broken as you point out, but not really functionally broken, because the story ends at that point, so players will have seen everything that the Sailor-route has at that point (until future updates, of course).
But thanks for pointing it out, I'll make sure to get that fixed :).