That's not what he said. Ship captains who sail on open ocean are well aware of tides. It is not too difficult to imagine somebody did 2+2 and figured out the

That's not what he said. Ship captains who sail on open ocean are well aware of tides. It is not too difficult to imagine somebody did 2+2 and figured out the tides are getting higher so in couple of days there is going to be better chance of freeing it. Obviously they did not plan it. It is just an opportunity they used.