Lion of the Seven Seas

In the aftermath of a vicious sea battle with the Chinese fleet that ends in a nuclear blast, the presidential project submarine Silversides is dispatched on a search-and-destroy mission against the resurrected submarine Panther, recently converted by the Iranians to fire hypersonic electrical grid-killer missiles at the U.S. East Coast.

Anthony Pacino, the Silversides' chief engineer, is forced to abandon his mourning the loss of the love of his life and driven to fight to the death for hi...