'Aircraft also know when they are flying over water.....you can hear the engine note change; ta pocketa pocketa pocketa....'...…
Maybe not quite correct Sunny,....but I can tell you that each time I crossed Torres Strait, to & from, I could hear those valves opening and closing......TROOLY...….
And, its only 105nm....with a couple of 'options'.....
But we all survived.....
Cheeerrrsss...