I solved that issue by using the US Navy ship listing, that was created by Chico & the DC Working Group a while back. I have it listed as DDG-32 USS Stroddard and attached to SP 1 (CVL-34 USS Oriskany CVGB). But to your point, I did have both CA-148 USS Newport News & SSN-750 USS Newport News active at the same time. I figured US Naval Intelligence would leave a couple of duplicates in place just to mess with the Soviets. I also used the classic Star Trek trick of just adding a "II" to distinguish the difference, i.e. CVL-31 USS Bon Homme Richard and LHD-6 USS Bon Homme Richard II. Just my 2 cents, for what its worth.
