Historically, there are several methods of protection against submarines. The latest ones are the guided weapons, as shown in this article below:
http://en.wikipedia.org/wiki/Anti-submarine http://en.wikipedia.org/wiki/Anti-submarine ---In FairfieldLife@yahoogroups.com, <fairfieldlife@yahoogroups.com> wrote: How does the destroyer protect itself against a submarine strike? ---In FairfieldLife@yahoogroups.com, <fairfieldlife@yahoogroups.com> wrote: Its capabilities are impressive and highly technological. But is it necessary? http://www.fool.com/investing/general/2013/10/26/is-general-dynamics-massive-new-stealth-destroyer.aspx http://www.fool.com/investing/general/2013/10/26/is-general-dynamics-massive-new-stealth-destroyer.aspx
