War Thunder 1.83 "Masters of the Sea" introduces the British Royal Navy tech tree (in Closed Beta), but also brings in new German, Soviet, and American vessels. The naval forces of these three nations can now be played by everyone, but there is even more to this update, such as German helicopters, new planes, and new ground vehicles.
https://www.notebookcheck.net/War-Thunder-1-83-Masters-of-the-Sea-takes-naval-battles-into-Open-Beta.344566.0.html