Ohio-Class SubmarinesThis is a pictorial guide to the SSBN and SSGN of the Ohio class, which includes previously unpublished interior photos taken by the author, who was provided rare access to several operational SSBN. Collectively, the US Navy's Ohio class submarines carry about half of America's strategic nuclear warheads. The 18 ships of the Ohio class are split between two variants; There are 14 nuclear warhead carrying fleet ballistic missile submarines (SSBN) and 4