I don’t know anything about the technicalities of why or under what circumstances an over the water take off is made but it is nothing new for the occasional plane to take off this way. We took a photo of Air France doing so in November after watching her do so several flights running during our time at BSV. In talking about it, someone mentioned the ultimate decision of which direction is up to the pilot. True? False? I don’t know and this could be pure fiction but we see it happen often enough that it no longer seems unusual to us and we’re not on island nearly as much as so many others.