The box is an old, no longer usable archival box that was being discarded some years ago. But it is imminently suitable to store wargaming figures. It measures 15" x 10" x 3". I glued some magnetic sheeting from a local sign store into the bottom and then cut two upper "floors" to take advantage of the smallness of the ships. The upper floors have magnetic tape affixed to them as moorings for the ships. The Russian battleships and cruisers occupy the lower level; Japanese battleships and cruisers the middle level; and both sides destroyers and, eventually, merchant ships the upper. All the ships fit with plenty of extra room on the top level.
Part of the Russian fleet on the lower level. One ship is turned upside down so you can see the metal base I glued to the plastic ship base to provide heft and a mooring for the ship.
Here part of the Japanese fleet sits on its middle layer. The finger holes on each end aid in lifting this level out of the box.
All three levels of the fleet anchorage.