It's Early Access.
A quote from the Steam release Dec 10.
"The campaign is currently under development, but it already offers many hours of gameplay. The campaign is going to have 10 playable nations (now it has 2), the map will be expanded to cover the whole world, and all gameplay mechanics related with the campaign will be completed during the Steam Early Access phase. While the game is available in Steam Early Access, we will add more functionalities for the core game, expanding the ship design options and the battle gameplay.
All players may participate with their ideas and feedback so Ultimate Admiral: Dreadnoughts becomes the naval game you always wanted! We deeply thank everyone who has supported us and welcome everyone who is interested in naval warfare to play our game and have real fun with it."
Give at chance, good things will come.