Corrected entry: In the scene where Robin discovers no yacht in the picture, Batman says as you truly remarked, no one can make a sea going vessel disappear. Robin never stated that the yacht disappeared. A reporter asked Batman about the disappearing yacht at the news conference, after the shark attack, and Batman responds how can a yacht simply disappear? (00:18:55)
Foinlavin
12th Feb 2005
Correction: It has been hours since they were at the hologram yacht. I'm sure it's possible that at one time off camera Robin made the comment "No one can make a sea going vessel disappear".
Foinlavin