Several previous postings on this site have discussed this weapons system. See linked site, paragraphs from which are provided below. The last paragraph contains a lot of misinformation, especially avoiding acoustic detection at a speed of 100 knots, and, indeed, the value of 100 knots itself.

The Kremlin says secret plans for a Russian long-range nuclear torpedo - called "Status-6" - should not have appeared on Russian TV news.

The leak happened during a report on state-run Channel One about President Vladimir Putin meeting military chiefs in the city of Sochi. One general was seen studying a diagram of the "devastating" torpedo system.

Launched by a submarine, it would create "wide areas of radioactive contamination", the document says.
The "oceanic multi-purpose Status-6 system" is designed to "destroy important economic installations of the enemy in coastal areas and cause guaranteed devastating damage to the country's territory by creating wide areas of radioactive contamination, rendering them unusable for military, economic or other activity for a long time", the document says.
"It's true some secret data got into the shot, therefore it was subsequently deleted," said Mr Putin's spokesman Dmitry Peskov.

"In future we will undoubtedly take preventive measures so this does not happen again."
However, the Russian government newspaper Rossiiskaya Gazeta reported details of the weapon, without showing the diagram, and speculated about a super-radioactive cobalt device. So the leak may not have been accidental.
Cobalt warhead?

On the diagram the giant torpedo's range is given as "up to 10,000km" (6,200 miles) and depth of trajectory is "up to 1,000m" (3,300ft).

It was developed by Rubin, a submarine design bureau in St Petersburg.
It would, apparently, be launched by nuclear-powered submarines of the 09852 "Belgorod" and 09851 "Khabarovsk" series.

Rossiiskaya Gazeta called the torpedo a "robotic mini-submarine", travelling at 100 knots (185km/h; 115mph), which would "avoid all acoustic tracking devices and other traps".

And to think we worry about global warming. I was wondering what ever became of Jimmy Carter's Neutron weapon ? Thanks for the thought inspiring posts, Bruce.