Wanted to pass this along. A little less than a half hour, but a good way to get up to speed on an emerging weapons technology. It also includes a lot of background on torpedoes.

I would only add that these are likely to be used as terrorist weapons as well as weapons of war.

H. I. Sutton is probably the leading unclassified source for information on unconventional naval warfare systems and has also been a great source on maritime drug smuggling technology. He has a website, “Covert Shores,” that is included on my “Recommended Blogs” page. He is also widely published in the popular press including by the US Naval Institute and in Naval News. He has also published several books.