AUKUS

[Going Boeing]

Good points N_a_B.

This is the Government position on the disposal UK Nuclear Submarine disposal



UK Nuclear Submarine storage at Rosyth

This article also backs up your thoughts about the dismantling likely to be done on site. Navy Lookout RN Submarine Dismantling

Your observation about the difficulty of towing a submarine appear to be correct which is why they fit reusable tow bridles to decommissioned US Navy submarines when they are to be moved.



Decommissioned USS Baton Rouge fitted with a reusable tow bridle around the bow.