<P> It is important to understand that hull number letter prefixes are not acronyms , and should not be carelessly treated as abbreviations of ship type classifications . Thus , `` DD '' does not stand for anything more than `` Destroyer '' . `` SS '' simply means `` Submarine '' . And `` FF '' is the post-1975 type code for `` Frigate . '' </P>
<P> It is important to understand that hull number letter prefixes are not acronyms , and should not be carelessly treated as abbreviations of ship type classifications . Thus , `` DD '' does not stand for anything more than `` Destroyer '' . `` SS '' simply means `` Submarine '' . And `` FF '' is the post-1975 type code for `` Frigate . '' </P>
what does dd stand for in the navy
what does dd stand for in the navy
Destroyer
Destroyer