Sorry for going back in time, but this is too funny ...
I was looking for pictures on Beatrix's trip last week to Curacao and my search query on ANP brought up these pictures. I had heard of the incident, but never seen pictures.
I guess the story is that on a previous visit to Curacao (1999?), the Queen was standing close to the water's edge during a storm, when she was hit by a rogue wave. She of course got a soaking! I heard she was a good sport about the whole incident and carried on as normal. It is funny to see her without her usual puffy do!