No, I have not spoken yet with anyone in the Navy who had opinion on a flat Earth.
I submit, however, that sheer logic and population probabilities demand that some FE sailors would exist.
The invite is made for them so sign-up and chime-in.
I rather doubt that you will get any takers.LOL
At least in the U.S. Navy, especially those involved in navigation.
I assure you that there no Quartermasters or Navigation Officers in the U.S.Navy who would even think the earth was shaped like some kind of a flat disc with some kind of a ring of ice around it.
It's quite laughable in Navy circles , I assure you. LOL
There might be some, like cooks and bakers , and those in the non-rated ranks, who could care less whether the shape of the earth was round or flat.
They don't need to know.
It's not part of their training.
I don't remember any mentiion of "flat earth" in Boot Camp.
We haven't spoken personally , face to face, but I was in the Navy, and I can definitely state that flat earth is considered a false idea at best and a stupid, foolish, ignorant and maybe even silly notion at worst.
As best as I have noticed, flat earthers seem to base their beliiefs on the writings of Samuel Birley Rowbotham.
These were written around the late 1890's.
This is the 21st Century.
This is 2018.
I did a search on charts used in oceanic navigation and found several websites showing how these charts are used.
They are all made from projections of the globe from those covering small to large areas.