Did you ever build a model warship and try to launch it in your bathtub? Did you ever build a working model warship complete with BB guns turrets and fight them on a pond?
Of course you haven't -but you might have thought about it... Apparently so did a vast number of others...
I bring you Remote Controlled Model Warship Combat!
A number of clubs (around the world) have taken this up... Here are some pictures from Queensland:
Here's a list of rules and other fun stoppers here:
http://www.ircwcc.org/