Old Ship? Sink it!

What do you do with old warships that you don't need any more (because you're so busy building new ones)?  You use them for target practice and let them sink in the ocean.  Does that pollute the seas with asbestos, lead, mercury, and other foul things?  Yes, and the sickness rate from asbestos is rising in California and Florida, off whose coasts most of the ships get sunk.  Yet another advantage of military spending.

http://www.asbestos.com/news/2012/03/12/navy-sinkex-program-raises-fears-about-asbestos-other-toxins/