In the 50s, personal submarines were hard to come by. With the turn of the war and weapons factories being slowly converted back into consumer factories, the diving suit was available to the general American public at a great price. These suits protected against decompression sickness and provided a defense against the immense amount of pressure at the bottom of the ocean. Although this skin won't provide a crafter with ability to breathe underwater, it will provide a way to roleplay inside sunken ships and on ocean floors.