4 ms·

The navies do not share any of this information.

• creshal 10y ago
  Other navies, sure, but the USN?
  • pjc50 10y ago
    I think he's hit on the real reason; if it's classified, then not only does it need to be replicated outside in the non-classified environment, but the people researching it need to actively avoid talking to people with classified knowledge lest their research be tainted and hidden forever. (This is far easier than trying to get it declassified)