The USS Retribution a historic sailing ship impressed into US Navy use.

[Targan]

Originally Posted by Legbreaker

Note the game materials only mention nukes greater than 0.5 megatons.
There's nothing to say smaller warheads did not (and probably did) hit many more targets of military, logistic and communications importance.
Shipyards, ports, etc are bound to be amongst these additional targets - it's up to the individual GM/Referee to decide which ones and how hard.

Yes, a thousand times yes. I've mentioned these points many times before. It's actually a really helpful feature because it means that individual GMs can decide in their campaign to have nuked pretty much any location NOT specifically mentioned to be completely intact. It gives individual GMs flexibility in their campaigns without breaking canon (whether that matters to them or not is entirely up to them).