I did a quick research for that water thing in Normandy3.
File meshplayer.bin contains info about the water animation bik file "Normandy3.bik" and i guess connection to scene2.bin or volumy.bin with expression "voda" (its means water in russian).
In file volumy.bin i found "voda" two times and one time in scene2.bin.
Maybe one of them is where this water location is stored and then can be changed to move water to sky.
I think Rad Video Tools can convert some video formats into *.bik format.