 To simulate the storm in the Atlantic, a model of the tower was  splashed with water from a large tank. Actor Jan Fedder (qv) lost  his grip on the railing and was washed off the model, breaking a few  ribs in the fall, one of the other actors instantly shouted "Man  Overboard". At first Petersen didnt realize it was an accident but  enthusiastically yelled "Good idea, Jan. Well do that one more  time!". Peterson still kept the scene and rewrote Jan Fedders part  in the film, so that his character spent the rest of the movie in  bed. The actor actually had to be brought back and forth from the  hospital every day because of concussion. The painful expression on  his face is real and not acted.