Q. Someone who follows the tradition to make the bracha of 'Ose Maase Bereshith' when seeing the sea from a plane. At what distance from the sea can he make that bracha?
A. Many Poskim maintain that the blessing to be recited on seeing the major seas, to comply with all opinions is indeed 'Ose Maase Bereshis.' (Chaye Adam 63: 3, Kitzur Shulchan Aruch 60: 5, Aruch Hashulchan and others).
Horav Shlomo Miller's Shlit'a opinion is that he should be close enough to be able to see even from high the waves and the strength of the sea. (See also similar ruling in Hilchos Brochos quoting Horav S. Wosner zt'l).
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit'a
Important Numbers
