The game of "battleboats" has an interesting feature that sets it apart from the majority of other games on this site:
While it is a turn-based game, the strategy of how to play your turns depends very little on what your opponents do on their turns.
I think that this feature is worth exploring in an additional Battleboats variant which I propose being named "Dark Battleboats Barrage".
In this variant, play would be as in normal Dark Battleboats, however neither player would have to wait for the other player before continuing on to their next turns.
As soon as both boards are set up, each player can take as many turns in a row as they like. The winner will be the player who sinks her or his opponent's ships in the least number of turns. (If they take the same number of turns, then the game will be a draw. As such, neither white nor black should have any statistical advantage.)
Teema: Re: Proposed variant: Dark Battleboats Barrage
The Dagda Mor: The one down side that I can see.... in a normal game, if I beat you, you would no longer have an opportunity to know where any of my ships are that you haven't found yet. In this new variant, it would allow the loser to still be able to see how i place my ships! This is not a huge drawback, but it would have an effect.
Teema: Re: Proposed variant: Dark Battleboats Barrage
Czuch Chuckers: Yes, that's definitely a way that this variant would be different than the others. But, then, variants are supposed to have differences, eh? ;-)
For some players, it might even be a preferred difference. While it does give up a bit of competitive advantage (say), it also changes the "feel" of the game. Speaking as someone who does lose now and again, there's always the "oh! I was so close! I wish I could go another couple of turns" feeling at the end of a game...