16-50. In arctic waters, use old sea ice for water. This ice is bluish, has rounded corners, and splinters easily. It is nearly free of salt. New ice is gray, milky, hard, and salty. Water from icebergs is fresh, but icebergs are dangerous to approach. Use them as a source of water only in emergencies.
16-51. As in any survival situation there are dangers when you are substituting or compromising necessities. Even though water is one of your basic needs, keep in mind the following tips.