
1) Concerning above-ocean flying 2) Like floatplanes 3) Of navigation over the ocean
Found on
https://www.crosswordclues.com/clue/aeromarine

The Aeromarine Plane and Motor Company was an early American aircraft manufacturer founded by Inglis M. Upperçu which operated from 1914 to 1930. From 1928 to 1930 it was known as the Aeromarine-Klemm Corporation. ==History== The beginnings of the company dated to 1908, when Uppercu began to finance aeronautical experiments by a small firm at Key...
Found on
http://en.wikipedia.org/wiki/Aeromarine

relating to navigation of aircraft above the ocean.
Found on
https://www.infoplease.com/dictionary/aeromarine
No exact match found.