Whilst wandering around the region, I keep seeing these craft, so far seen around a dozen or so over the last week,...they are all Iranian, coming from Iranian ports. Most stay within the confines of the Strait of Hormuz.
This one, Aramis Net2 94, is lurking around the area that the USN is said to be. Listed as a WIG (wing in grnd) they are infact ekranoplan.