Living in the Deep: What They Don’t Tell You About Submarine Service

#25: Classes of U.S. Submarines Explored

Reddit user Frogel offers a breakdown of U.S. submarines, divided into three main types: SSNs (Fast Attacks), SSBNs (Ballistic Missile Subs), and SSGNs (Guided Missile Subs). SSBNs and SSGNs are larger and roomier, often featuring a crew lounge that can double as a makeshift gym.

In contrast, SSNs are far more cramped, with no space for such luxuries. Certain silent operations restrict movement and prohibit exercise entirely, adding to the challenge. During these tense, quiet stretches, crew members can grow physically and mentally restless.

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