SSN (novel)

SSN is a techno-thriller novel, created by Tom Clancy and Martin H. Greenberg and published on December 1, 1996, as a tie-in to the video game of the same name. It follows the missions of USS Cheyenne, a United States Navy nuclear attack submarine, during a fictional war between the United States and China over the Spratly Islands. The title references the U.S. Navy hull classification code for a nuclear-powered attack submarine. SSN is the second Clancy novel after Red Storm Rising (1986) that is not set in the Ryanverse.

The book also features the transcript of a discussion of the game with Clancy and former Royal Navy submarine commander Doug Littlejohns, which was held in Greek Island, a former government-owned fallout shelter located in West Virginia. The interview was originally released along with the CD-ROM of the game.