Rich Keller
Contributor
I was reminded of a couple of DIY ideas when I was relating a story about oyster divers the other day. These guys made their own hot water suits and a unit to heat the water instead of using dry suits. The suit was a standard wet suit with small tubes running hot water from a garden hose to different parts of the suit. The heater was just a pipe about a foot wide and maybe 2 1/2 to 3 feet long with copper tubing coiled on the inside of the pipe. The pipe was standing upright with a metal plate at the top and burner under it heating the water in the copper tube. The temperature was regulated by how fast the water was being run through the copper tubing. This was used in conjunction with surface supply air and incorporated into the umbilical. Might be something an ice diver could use but not much use for basic scuba.