Piranha: Firing Point mp-5

In a world where China has been split two nations — Free China and Red China — a Red Chinese naval commander captures six Japanese submarines as part of an agenda to annihilate its sister country. But he didn't count on an American Vice-Admiral learning of his treacherous plans. At first the U.S. Government is skeptical, only to bear witness to a direct attack by the Reds. Immediately the Vice-Admiral readies his Pacific fleet, with a secret submarine, to do battle in an all-out fight to bring peace to the world.