I don't know CoE. Granted, the Númenórean navy was very impressive considering they scared Sauron stiff - and he had to implement plan B. But those gullible West-folk would have been a feast for the buzzards after the Eldar got finished with them. The Elves were a bunch of haughty snoots, but could tear it up when they were ticked off. Everyone forgets that it was the Eldar of Aman that pummeled Morgoth's entire Front (including the Air Force) in the War of Wrath. So I think the largest single-day amphibious invasion in the history of Arda would have gone very badly for the King's Men from Starwards no matter how it went down.