Here is some fascinating reading reproduced by Business Insider Australia, February 9, 2019, on USS Fitzgerald's many problems before its 2017 collision. Problems in the US Navy were (are?) even worse than originally thought.
Submarine Matters originally reported on the fatal USS Fitzgerald collision on June 18, 2017 and on August 24, 2017.
Pete
USS Fitzgerald towed into US naval base Yokosuka, southwest of Tokyo, June 2017, after collision. (Photo courtesy Spc. 1st Class Peter Burghart/US Navy via AP).
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Submarine Matters originally reported on the fatal USS Fitzgerald collision on June 18, 2017 and on August 24, 2017.
Pete