 The underwater scenes of Buster Keaton (qv) trying to repair the  ship in full diving gear were originally intended to be filmed in  the local municipal swimming pool. However, the pool was not deep  enough, so higher retaining walls were built around the edges, to  hold more water. Unfortunately, the weight of the additional water  broke the bottom of the pool, and Keaton had to pay for the repair.  The production was moved to Lake Tahoe, where the water was very  clear, but so cold that Keaton could only stay under for ten minutes  at a time. The camera crew was sent down in a watertight box, with  ice packed around the camera to keep the lens from fogging over.