[NormsRevenge]

The M/S Explorer cruise ship sinks hours after hitting an iceberg off the coast of the Antarctic, in this photo released by the Chilean Army November 23, 2007. REUTERS/Chilean Navy/Handout

[DB]

How bad was the weather? For a ship to drift into an iceberg and sink as a result would imply severe weather. If it was calm that makes no sense at all even if that was the second collision.

Somebody do a count of Chinese subs... The Russians and the US would fess up to a damaged or missing sub.