I forgot there was an HMS America lol! I think it was even based on the French designed America... which was based on the American built one... (I think- sailing ships are confusing ) Yes, I was thinking of the Long guns... but as you say, most ships could mount those. It's late where I am.
And I understand why you would feel that way, your right that the US never really had any SOL's, some were started during the War of 1812, but they weren't finished until many years later, the "America" did at least get built, and saw action. I guess I made it mostly as a suggestion for later, when the Open World comes out.
I know it's been suggested that if the US has the same types of ships as the other Nations, that when the Open World comes out, that's all we'll see. On the opposite side of that view, I'm afraid that if the heaviest US ship is a Frigate, that when the Open World does come out, you won't see many US ship's at all; everyone well be going for the Victory or Santisima, the "best" ships (I think that will eventually happen no matter what, given the nature of online games).
I thought the "America" was a good compromise between those points of view. It would give the Americans 1 type of heavy warship, while still leaving them inferior to the British, French etc.
I suppose I'm just thinking about it from a game-play perspective. From a purely Historic standpoint, your right... the US should not get any Ships of the Line. But I can dream can't I??? I admit, I'm an American... so I might be a little biased...