Now... one thing I have NEVER been able to find out WTF they do or are, are those huge pylons/antenna-like things on the sides of aircraft carriers. They sort of droop towards sea like huge fishing poles. Sometimes they are put vertically (like in port or whatever)... and many times, they just aren't there.
I have a feeling its for communications, or submarines, or somekind of detection system... but never been able to find out what they are.
Here are some pics in case you dont know what I'm refereing to
here is when they are deployed up