Carol, a US sub struck a Japanese fishing boat when it was doing an "emergency surfacing" exercise. Indications were that a couple of civilian guests were at the controls at the time.

Fionn, it's hard to see how these two incidents are at all comparable, except that they both involve submarines. The Russians didn't try to rescue, or allow anybody else to try to rescue, THEIR OWN MEN, until it was certain they would be dead.

The US is frantically searching the crash site as we speak, and has sent multiple apologies to Japan and has launched a rather serious investigation into why the sub wasn't aware that the Japanese trawler was in the way of its surfacing.

Apples and oranges, as far as I can see.

Alex