Which of the following is NOT a Seawolf-class submarine?

• A. USS Seawolf (SSN 21)
• B. USS Connecticut (SSN 22)
• C. USS Jimmy Carter (SSN 23)
• D. USS Los Angeles (SSN 688)

Answer: (D)

In this context, class is determined by the design lineage and a shared hull-number range. The Seawolf-class includes submarines that share the same advanced design and construction: the ones named Seawolf, Connecticut, and Jimmy Carter. They all belong to the same generation with hull numbers in the low twenties and represent the follow-on to the earlier Los Angeles design. The submarine named Los Angeles, however, is part of the Los Angeles-class, an earlier design with a different hull-number series. Because it doesn’t share the Seawolf design lineage, it is not a Seawolf-class submarine.