(urth) miles, jonas, and that sailor guy, and sea/interplanetary vessels

[Marc Aramini]

You know, I've never been really sold on the idea that the soldier Miles or whatever is really a returned Jonas, and yesterday for the first time in a long time I was reading the ending of Citadel (what wonderful imagery) and the description of the masculine voice and the feminine voices under the water by the sailor who used Jonas' Wellerisms kind of made me wonder once again if there is a universal consensus that Severian is right in believing that soldier guy is Jonas.  This unnamed (I think) sailor has all of the speech style of Jonas, but we always attribute it to them both being sailors.  In the afterword, Wolfe says one of the most frustrating things is Sev's failure to distinguish between sailing vessels and actual interplanetary vessels, and says the moon is no farther than another coast.  Where could this apply in the text? 

The sailer says for a bit he felt as if he was wasn't on Gyoll, but on a river that runs up in the sky, or underground, and then he runs into that weird ship of Pandours or something, and I always wanted explication for this scene in general, and why Wolfe says in the afterward that Severian does not distinguish between sea and interplanetary vessels.