How about contamination maybe meltdown and wind conditions etc?
Hey I’ll try to find facts on the case and relay them to ya.
May take a while.
Contamination may be the issue. But a submarine reactor is no where near the size of a commercial reactor obviously, and the submarine hull would be an effective containment vessel. So I don’t see there being catastrophic contamination. And I’m not sure about Soviet/Russian subs, but at least on American submarines, there is no hatch from the reactor compartment to directly outside the hull.
I looked up Soviet submarine accidents, and the closest one that I could find to the Carolinas that had a reactor incident is K-219. It initially had an explosion and fire in one of its ballistic missiles, then one of the reactors would not shut down until a 19 year old sacrificed his life to do it manually. However, this occurred 680 miles north east of Bermuda. This occured the same year as Chernobyl.
The closest incident to South Carolina was when the K-324 fouled its screw on a towed sonar array pulled by the USS McCloy. This was 282 miles west of Bermuda in 1983. K-324 had to be towed to Cuba for repairs, but there were no reactor issues.