<p>Here is an article from the March issue of Shipmate that might be of interest~</p>
<p><a href="http://www.usna.com/News_Pubs/Publications/Shipmate/2006/03/ServiceSelection.pdf%5B/url%5D">http://www.usna.com/News_Pubs/Publications/Shipmate/2006/03/ServiceSelection.pdf</a></p>