Here is a list of ships that have been added to each country, in alphabetical order.

Argentina: 1 CV (Cruiser), 1 BB, 2 BC, 2 CA, 3 CL, 8 DD
Brazil: 1 BB, 3 CL, 7 DD
China: 6 BB, 1 CA, 3 CL, 12 DD
Britain: 2 CV (Battleship), 8 BB, 5 BC, 7 CA, 13 CL, 38 DD
France: 2 CV (Battleship), 1 CV (Cruiser), 10 BB, 2 BC, 8 CA, 12 CL, 19 DD
Germany: 1 CV (Battleship), 7 BB, 5 BC, 2 CA, 10 CL, 22 DD
Greece: 2 BB, 2 CA, 7 DD
Indonesia: 2 CA, 4 CL, 13 DD
Italy: 1 CV (Battleship), 1 CV (Cruiser), 6 BB, 3 BC, 4 CA, 1 CDS, 12 CL, 31 DD
Japan: 4 CV (Battleship), 10 BB, 9 BC, 7 CA, 11 CL, 40 DD
Netherlands: 1 CV (Cruiser), 4 CA (Coastal Defence Ship), 7 CL, 17 DD
Soviet Union: 1 CV (Battleship), 4 BB, 5 BC, 11 CA, 22 CL, 46 DD
Spain: 4 BB, 3 CA, 4 CL, 9 DD
Turkey: 1 BC, 2 CL, 9 DD
United States: 4 CV (Battleship), 11 BB, 4 BC, 4 CA, 5 CL, 45 DD