Which class was the first SSGN?

The first SSGN, or guided missile submarine, is indeed part of the Ohio Class. This class was specifically modified to serve dual purposes: to enhance its strike capability and to provide for special operations. The Ohio Class submarines were originally designed as ballistic missile submarines but were later converted to SSGNs to carry both Tomahawk cruise missiles and special operations forces.

The Virginia Class and Seawolf Class submarines, while advanced in their own right, do not hold the designation of the first SSGNs. The Virginia Class is a later design focused on multi-mission capabilities and advanced technology, while the Seawolf Class emphasizes anti-submarine warfare and undersea dominance. The Los Angeles Class submarines are also not considered SSGNs but rather attack submarines that were built prior to the development of Ohio Class SSGNs. The significance of the Ohio Class in transitioning into the SSGN role represents a pivotal evolution in naval warfare, integrating strategic strike and special operations capabilities under the sea.