She is in Baltimore, Maryland, USA, I believe, and is recognized as an American Historic Site, so she has not been destroyed. SAVANNAH is waiting for investors to turn her into a museum, which makes sense. I don't think she ever operated commercially, only as a floating, travelling industrial exhibit for the US.
A correction: Ice breaker LENIN was the first commercially operated atomic vessel.
Also, I see now that my photo is flipped backwards, so if you save pictures into your own files, flip the picture to correct it.
I had the opportunity to visit the ship in the mid 1980s when she was in Charleston. I don't recall if any of the nuclear fuel was still in place, but the engine room was definitely open for inspection.
A second ship, a tanker, was built. I'm told it was a twin hull with the idea to make it a nuclear powered tanker. I am not sure this is true. It was made with a conventional oil fired boiler geared tanker.
However, parts of the Savannah's reduction gears were removed and installed in the SS American Explorer, sometimes called the American Exploder
HAVE A SMALL BLACK AND WHITE PHOTO OF SAVANNAH IN BUENOS ARIES JULY 1963 DONT KNOW IF SHE WAS CARRYING CARGO OR NOT REMEMBER THE GENERAL CONSENSUS AT THE TIME AMONGST OUR CREW SHE WASNT SAFE TO TRADE AS SOME PORTS DID NOT WANT HER TO VISIT. REGUARDS KYPROS