Cold-water hazards are a type of danger that can be found in bodies of cold water, such as rivers, lakes, and oceans. Berg is a German word for a large mass of ice, which can be a hazard in cold water. Berg can also refer to a large mass of snow or rock, which can also be a hazard in cold water. Cold-water hazards can include icebergs, large waves, strong currents, and other natural obstacles.