This could be interesting?

[The notsoold man&the SEA]

To all cruise lovers of the world I was pontificating over an idea I had one night. If you thing it’s got some merit let me know and I’ll work on it further. Here it is, that all cruise ships be coded with there call sign clearly visible from an aerial view on some section of the ship that’s not too architecturally speaking unsightly! or even just there name maybe, what do you think everyone? This idea came from trying to work out ships that I’ve spotted from Google Earth

[parody]

How different would this approach be compared to what is used by these folks to track cruise ships with Google Earth?