Tom Clancy's SSN is a simulation of the 688i (i.e. Los Angeles-class) nuclear hunter/killer submarine. The player commands the USS Cheyenne in a limited war against China over the Spratly Islands in a 15-mission campaign where they'll perform a wide variety of missions from patrol to escort, from boomer hunt to convoy attack.

Tom Clancy's SSN is a simulation of the 688i (i.e. Los Angeles-class) nuclear hunter/killer submarine. The player commands the USS Cheyenne in a limited war against China over the Spratly Islands in a 15-mission campaign where they'll perform a wide variety of missions from patrol to escort, from boomer hunt to convoy attack.