Something is not quite right. Aside from the story not matching the physics of the 6 day trip, there's the fact that six days with no water - complicated by the ingestion of sea water - will leave you nearly dead. They should also have had much more in terms of abrasions and contusions if they were in the situation they faced. I think they got stoned, fell asleep in the sun, and then went for a boat ride.
It's no "miracle" is a sad, sad case of chronic dumbness.