Allan Rockwell McCann was in charge of the development of a submarine rescue chamber, which bears his name, "The McCann Submarine Rescue Chamber". Additionally he was assigned as Liaison Officer / Engineer when the submarine was converted for use in the under ice attempt to circumnavigate the Arctic Ice cap and voyage to the North Pole. Modifications to the submarine were extensive, and contained innovations of a telescoping conning tower, an ice drill, an incorporated diving bell and an Air Lock, designed by Simon Lake. The submarine was designated "Nautilus" and leased for one dollar to Lake and Danenhower, Inc., of Bridgeport, Connecticut,
Ice cap climate Mountains, the Caucasus, and the Alps. Mars, like Earth, has ice caps at its poles. In addition to frozen water, Mars ice caps also have frozen carbon dioxide, commonly known as dry ice. In addition, Mars has seasons similar to Earth. The North Pole of Mars has a permanent water ice cap and a winter-only dry ice cap. On the south pole, both the water and carbon dioxide are permanently frozen. Europa, a moon of Jupiter, is covered with a permanent sheet of water ice, similar to Antarctica. Scientists theorize that it may have sub-glacial lakes similar to those seen