- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
made the dive and quickly got out and showered.... it was over 85* that day.
Hmmm True or False
- Thread starter Steve S
- Start date
made the dive and quickly got out and showered.... it was over 85* that day.
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
northshore
Well-Known Member
- Jan 17, 2011
- 2,093
- Boat Info
- 1989 340 Sundancer
Raymarine E90W Radar/Chartplotter
- Engines
- Twin 454 Mercruiser 340's
Last words coming soon to a tombstone near you! 
"Salt water... Is a whole lot safer than fresh water."
Man I would hate to read about anyone from CSR doing the big, last twitch.
"Salt water... Is a whole lot safer than fresh water."
Man I would hate to read about anyone from CSR doing the big, last twitch.
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
Last words coming soon to a tombstone near you!
"Salt water... Is a whole lot safer than fresh water."
Man I would hate to read about anyone from CSR doing the big, last twitch.
Hey, everybody, I appreciate your concern but I'm in the water in a marina at least 2 x per year doing my zincs... If you are not doing your own zincs than somebody else is in your marina water doing for you..?
Mark, that leads to a great point. We can hire divers for dropped things and clean hulls etc. so how do those "professionals" check the water to be sure they are safe? Mike
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
https://www.boatus.com/seaworthy/magazine/2013/july/electric-shock-drowning-explained.asp
Why fresh water and not salt? Salt-water is anywhere from 50 to 1,000 times more conductive than fresh water. The conductivity of the human body when wet lies between the two, but is much closer to saltwater than fresh. In saltwater, the human body only slows electricity down, so most of it will go around a swimmer on its way back to ground unless the swimmer grabs hold of something — like a propeller or a swim ladder — that's electrified. In fresh water, the current gets "stuck" trying to return to its source and generates voltage gradients that will take a shortcut through the human body. A voltage gradient of just 2 volts AC per foot in fresh water can deliver sufficient current to kill a swimmer who bridges it. Many areas on watersheds and rivers may be salty, brackish, or fresh depending upon rainfall or tidal movements. If you boat in these areas, treat the water as if it were fresh just to be on the safe side.
