Some subs do sail as part of a carrier battle group, but most subs are either hunting other subs, or are on deterrent patrol. Ballistic missile sub have substan

Some subs do sail as part of a carrier battle group, but most subs are either hunting other subs, or are on deterrent patrol. Ballistic missile sub have substantial firepower, and are much more survivable, and therefore, the less visible and most important part of a Navy's deterrent mission.