Which of the following is NOT a noted preventative measure for hypothermia?

Using dry suits in warm water temperatures is not a noted preventive measure for hypothermia. Dry suits are specifically designed to be used in cold environments as they provide insulation and protect the body from the chilling effects of cold water. In warm water temperatures, the risk of overheating increases significantly when wearing a dry suit. Therefore, it is not sensible or effective to wear a dry suit in warm conditions where hypothermia is not a concern.

Conversely, wearing neoprene wet suits, adding insulated layers before diving, and using variable volume dry suits are all recognized methods for preventing hypothermia. Neoprene wet suits offer thermal protection by trapping a layer of water that is warmed by body heat, while insulated layers enhance this protection against cold. Variable volume dry suits are particularly advantageous in colder temperatures, allowing for the adjustment of air volume to accommodate temperature changes and prevent thermal loss.