ICE!

B

blue_nova

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Joined
Apr 27, 2006
RO Number
21040
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67
Went to check on the boat (Carver 360) at the marina yesterday. Location Ohio River at Markland Dam. Boat is in about 7 ft of water.

Found that the bubbler de-icer was out on one side, and that allowed the Ice to build to at least 2 inch thickness.

I've seen what ice can do to steel dock post, so
I'm concerned about a fiberglass hull.

Any input on ice protection?
On a scale of 1- allow none at all to 10- not a
problem till boat frozen under.
 
I think the ice will soon melt if you can get the de-icer going again. I also believe the ice may be more damaging to an outdrive than an inboard. That, of course is an opinion that will cost Me nothing.
 
If it is against the hull the ice will win. It may only be a cosmetic win, but it will win.

The plus is you have free water on one side, so the ice is pushing your boat to the free water.

If possible, break up the ice from the dock and get it away from the boat. Two inches is not enough to support you but is enough to scrape the gelcoat.

Get the bubbler fixed or replaced ASAP. We are due for more global warming this year.
 
quote:
Originally posted by Chief Alen

salt water doesn't freeze?

Click to expand...


That's sort of correct. What happens is the water holding the salt in solution freezes and pushes the actual salt out of the frozen water matrix. The surrounding liquid water gets saltier and harder to freeze but it will eventually.

The ice, made from salt water, is actually free of salt and drinkable. That's part of the rationale for towing icebergs up from Antarctica to southern CA for drinking water.
 
rbmitchell,

Thanks for that. I recall several years ago a Japanese firm was cutting icebergs into large chunks to bring back to Japan for resale to bars. The premise was the ice was so cold it lasted longer in drinks and did not water down the liquor. Don't know what happened to them. Maybe the economy. I know it was more per gallon than boat fuel.
 
quote:
Originally posted by KiDa

rbmitchell,

Thanks for that. I recall several years ago a Japanese firm was cutting icebergs into large chunks to bring back to Japan for resale to bars. The premise was the ice was so cold it lasted longer in drinks and did not water down the liquor. Don't know what happened to them. Maybe the economy. I know it was more per gallon than boat fuel.

Click to expand...


Sounds like the Japanese population saw through that scam. When you have a two phase system (both ice and water, steam would be a third phase) the temperature and pressure tend to stay at an equilibrium. At atmospheric pressure the equilibrium point is zero centigrade (32 deg.F). The ice in their freezers would be way colder than anything they would drag up from the south.
 
salt water doesn't freeze?
[/quote]
That's sort of correct. What happens is the water holding the salt in solution freezes and pushes the actual salt out of the frozen water matrix. The surrounding liquid water gets saltier and harder to freeze but it will eventually.

The ice, made from salt water, is actually free of salt and drinkable. That's part of the rationale for towing icebergs up from Antarctica to southern CA for drinking water.
[/quote]
I believe, from watching documentaries, that sea ice forms "floes," comparatively thin, flat sheets. Icebergs are calved off glaciers which are formed from accumulations of snow (pure water) over many years. FWIW

Lar.
 
I think you're correct, Lar, that bergs are calves from glaciers which are from precipitation. But frozen seawater is still free of salt.
 
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