No, it's well known that humans cannot safely ingest the quantity of salt contained in sea water. In a normal situation with available fresh water it would not kill you, but if you were stuck at sea with no fresh water the 35g/L of salt you'd be consuming is way beyond the recommended upper limit of 5g/day.

Excess sodium in the bloodstream isn't pleasant: https://en.m.wikipedia.org/wiki/Hypernatremia