Two to four players card game for Naval Arms Race prior World War Two. Mostly card represent hull, gun, engine or other equipment based on used or planed battleships in World War Two. The game divided to two stages. In the first stage, players design new battleships by combine of parts cards. In the second stage, the winner of design competition is fight against imagined enemy's battleship. Winner is determined by battleship design competition and combat result. The first edition named "Senkan Kyosokyoku"(is means Battleship Roaring Songs) had a focus only on battleship design. It was self-published as one of Yuichi Kazama's Competition series. And then, combat rule were added by re-develop.