Actually sailortjk1, I'm based on Narragansett Bay - RI, not MD. I don't know of any websites for aerials in the Chesapeake Bay area, perhaps someone else can chime in with some links.
The group that shot a series of 5 aerials of us while sailing the Bay last summer ('05), is Bird Eye View of Rhode Island, http://www.riaerials.com/
. . . thousands of photos to browse through - all for purchase in High Resolution digital or print formats. I bought two large format, frameable prints after recieving a postcard from them with a TrueBlue image printed on front, and yes, I was excited to see it - so much to buy all 5 views on a CD.
They obtain mailing addresses from vessel Documented names (USCG website) or local registration files. The digital images are so sharp, they can zoom into either the vessel name, or even the state sticker's number.
Just went back into that website, searched for True Blue and discovered that they had taken 3 more aerial shots of my boat, while sailing from Dutch Harbor a couple months ago. That makes 8 total . . . very cool. Too bad the genoa wasn't unfurled though.