Can't see them using NDB's as the WE177c (I think that was the model) was withdrawn some time ago.
Can't see the tactical utility in them today anyway, particulalry in litoral ops against diesel/electric subs due to comtamination and risk of fallout from shallow detonations.
So unless we have acquired some on a lend/lease scheme fom the septics I can't see it myself.
(The above is purely specualtion on my part and is based on information openly published in the Beano)