SSN: Modern Tactical Submarine Warfare is a board game published in 1975 by Game Designers' Workshop.
SSN is a game about submarine warfare.
In the 1977 book The Comprehensive Guide to Board Wargaming, Nicholas Palmer noted that the map was "understandably" featureless, and mentioned the "wide range of scenarios and forces".[1]
. Nick Palmer . . Sphere Books . 1977 . London . 176.