Todjaeger
Potstirrer
You managed to miss the gist of my post.No. They dont. The W-80 warheads are currently stored onshore. Either way it doesnt matter. America would never change its policy concerning making public if ships had nuclear weapons on them.
What started the problem between elements of the US and NZ, was when NZ denied the USS Buchanan DDG-14 permission to enter NZ home waters in 1985, on the basis that Charles F. Adams-class DDG's were capable of being armed with nuclear depth bombs/charges, and the US was unwilling to declare that they were not aboard the USS Buchanan, due to US policy of not declaring whether something is or is not armed with nuclear weaponry.
The NZ requirement of a declaration that the USS Buchanan was free of nuclear weapons, was a new NZ Gov't policy as of some time in 1984 IIRC, and it did not become a legal requirement until made into an Act in 1987 (again, IIRC).
There was a significant amount of diplomacy and also political issues going on at the time in the background, and I have my own observations and thoughts about parts of the what and why, which are really not needed here.
What is IMO more significant is that at the height of the Cold War, there were an enormous number of nuclear warheads in the US inventory, and many different types of vessels, vehicles and aircraft could deploy them. As time has progressed, the US has retired a number of the warhead designs, so that less and less USN vessels are able to deploy a nuclear weapon. This was the point I was making.
If the NZ Gov't knows that a particular USN vessel requesting permission to enter NZ home waters and make a port call cannot field nuclear weapons because of it's class, then the 1987 Act does not cause a problem, because the NZ Gov't does not need to have the US declare the vessel in question is free of nuclear weapons.
-Cheers