Deep ocean minerals not only by its mineral density but cold temperature, cleanliness and trace elements. DOW is present at depths of between 250 and 1500 meters. This deep ocean current moves very slowly under the influence of density and temperature gradients. The high mineral density is attributed to the depth related pressure and the change in temperature from 20 °C+ at the surface to 8 °C at 600 meters depth generates the movement of this layer. "Very deep ocean water" has been discovered in a number of troughs in the Atlantic and Pacific Oceans. Depths can range from 1500 meters to 15
SS Milwaukee the Great Lakes" in 1968. As a result of the loss of the SS "Milwaukee", the Grand Trunk needed a new train ferry. The replacement was the , launched November 25, 1930. The replacement vessel is now a museum ship and National Historic Landmark. In April 1972, the wreck was located in Lake Michigan, seven miles northeast of Milwaukee, Wisconsin, three miles offshore (on a line between Milwaukee and Grand Haven), at , in of water. In March 2006, the History Channel television program "Deep Sea Detectives" premiered an episode entitled "Train Wreck in Lake Michigan", which profiled the loss