Panzerschiffe and Ultimate N Scale - this is the home of 1/2400 scale model ships. For the hobbyist and wargamer; and now this is also the home of the recently aquired Ultimate N Scale - model railroad N guage trucks, trailers, flatcars, decals, etc.
This company sell both the naval minitures and sets of rules for play. The advantages of 1/2400 scale are cost and the space needed to play is much less. Many battles can be run on a tabletop.