The issue of the redevelopment of naval cultures has come up in another question, but it occurred to me that I don't recall ever reading how Dormal sidestepped The Closing. For those who haven't done the background reading, Dormal is the Sailor God. He was am Esrolian Nobleman, and is claimed as a son of Belintar, who became infatuated with the "call of Magasta". He had read about voyages during the second age, found a mosaic regarding how to build a ship on a Nochet boat shop floor, performed subsidiary research, obtained finance, and somehow figured out the sorcerous "Open Seas" ritual. This meant that in the year 1580 that he was the captain of the first ship to set sail beyond the sight of the coast and survive the Closing, which was a sorcerous ritual curse unleashed by Zzabur.
The question is, what was the loophole Dormal exploited? Is the Boat Planet related to the Open Seas Ritual or is that just something that cemented Dormal's place as a deity?