It is no secret where our ships are (except submarines). Out in the Mediterranean, Red Sea, Gulf, etc., we are almost always within visual range of fishing, shipping and other commercial vessels. These ships all have radios.
Now, where we're going tends to be a little more secret. When the Eisenonhower was sent to support operations off the coast of Somalia in Dec. '07, they turned off the ship's phones and email until after we got there.
Thank you Drew68 for the feedback.