[Upscaled]

Thanks for the explanation.

However, in the anime, the launch location is well within sight of land (See 17:33) and normal (i.e. non-ghoul) bees can fly for several kilometers, not accounting for wind speed and direction.

Also, it struck me as strange that Kiritsugu would cause the deliberate break-up of the plane at low altitude in order to increase the likelihood that all the bees are eliminated. But then again, this all takes place in a world with magic, so I'm not going to worry too much if the laws of biology, aviation, weather, etc. of our world don't totally seem to be in sync with the world depicted in Fate/Zero.