[C38] Cubic feet of air space

[Joseph Launie]

Ken,
    Phil Gay mentioned ventilation as being important in keeping a dry 
boat. In Santa Barbara we share a double slip with another boat with no 
walkway between. My slip partner is an old model Catalina 36. They have 
two Dorade vents forward of their dodger. I measured our boat and found 
there was space. I think they really look sharp.  The Dorade vent comes 
with its own cowl ventilator which is removable. We take ours off when 
racing to keep the crew from knocking them overboard.  I had 
commissioned Macavity myself and so had purchased a Milwaukee hole saw 
set.  The ventilators are rated at 3 inch but I believe they require a 3 
1/2 inch hole thru the deck. Cutting those holes with a powerful half 
inch drill and the Milwaukee hole saw went smoothly but it was scary. I 
discovered our deck was 1/2 inch glass, 3/4 inch plywood and another 1/2 
inch glass in a solid sandwich. That is right - 1 3/4 inches of solid 
deck. That is why it does not bounce up and down when you walk on it. 
(and why we are slower than the J boats in light air).
    Anyway, the Dorade vents let in air and keep out water. Our boat 
smelled much better after this installation. I am going to the boat 
tomorrow to clean the stainless rails and will try to take some pictures 
of our set-up. Joe Launie, Commodore, Macavity # 365.

eyriepg at comcast.net wrote:
> Ken,
>  
> We keep Que Linda in Everett, WA and I tried the dehumidifier route 
> winter before last.  The dehumidifier works until the cabin 
> temperature drops to about 40-45 degrees then it freezes up.  I know a 
> guy who has a severe allergy to mold and he runs 2 electric heaters to 
> keep his dehumidifier from freezing. 
>  
> My solution is to run 2 100 watt light bulbs continuously and set my 
> electric heater on a freeze watch.  I also leave the boat ventilated 
> as much as possible.  I do check the boat's wiring to shore power 
> connection  every year for corrosion, which has caused fires in some 
> friends boats. 
>  
> I haven't tried the chemical air dryer but I have heard that it works 
> well.
>  
> Phil Gay
> C38 049 Que Linda
> Everett, WA
>
>     -------------- Original message --------------
>     From: "Kenneth M. Sutto" <kmspacific at hotmail.com>
>          I have a 1983 Catalina 38 #253 up here in the Pacific
>     Northwest. These last few nights have been very cold and in the
>     morning the inside of the boat is sometimes frosty and always
>     damp. I feel unsafe leaving a heater going all night, along with
>     the power cost.
>          How do I figure the cubic feet of air space below decks so I
>     can get the right size air dryer dehumidifier? I was told they use
>     very little power and are much safer than heaters.
>         
>          Ken Sutto    #253
>
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> ------------------------------------------------------------------------
>
> Subject:
> [C38] Cubic feet of air space
> From:
> "Kenneth M. Sutto" <kmspacific at hotmail.com>
> Date:
> Sat, 24 Nov 2007 01:09:40 +0000
> To:
> "Organization - listserve at catalina38" <listserve at catalina38.org>
>
> To:
> "Organization - listserve at catalina38" <listserve at catalina38.org>
>
>
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