[Bob Eimiller]

Fast attack subs are named after cities... “Boomers”, Nuclear Missile subs are named after States.

[Afterguard]

Actually, i think it’s the other way around right now. SSN classes are are State names, i.e., Virginal class - SSN USS North Dakota, etc. Boomers are city named. i.e., SSBN USS Minneapolis. The conventions seem to change with the times.