I take a different strategy here in Seattle - no winterizing, just a marine electric heater on power=2, temp = lowest (anti freeze setting). Plus visiting the boat 1-2 times per week, which I'm doing anyway for winter projects. And sailing about 1x/month.
Vancouver is a little colder, but it's the water temperature that keeps your boat's bilge warmer generally. In Seattle the water temp is 50F. I imagine it's between 45-50F in Vancouver. You can check US PNW water temps here: https://www.nodc.noaa.gov/dsdt/cwtg/npac.html Vancouver (47F): http://www.seatemperature.org/north-america/canada/vancouver.htm Do you have a themometer is your boat cabin? Move it around various places and I bet you'll find the bilge is typically at least 10F higher than the outdoor temperature (measure in early morning if possible). In Seattle our nighttime lows are hitting 26 F. So with 26 F outside air temp + 45-50F water temp, we don't hit 32F inside the boat. The cockpit shower hose is a different matter. That's not near the bilge, so it's subject to freezing temps (but hasn't had any issues yet). -Patrick Seattle, WA On Tue, Dec 13, 2016 at 10:46 AM, <cnc-list-requ...@cnc-list.com> wrote: > ---------- Forwarded message ---------- > From: Jeremy Ralph <jeremy.ra...@gmail.com> > To: cnc-list@cnc-list.com > Cc: > Date: Tue, 13 Dec 2016 10:17:01 -0800 > Subject: Stus-List freeze proofing > Here in the Pacific NW (Vancouver) we're getting freezing weather now, > which rarely happens. Many people keep a small ceramic heater running in > their boats, but what if the shore power goes out? > > Here is what I did last week to prep: > > 1. Run 2QM20 raw water cooled engine under load for 20min to warm it up. > Stop engine. Close seacock. Open sea strainer. Start engine. Pour RV > antifreeze into the sea strainer. Stop engine. Close sea strainer. > > 2. Drain fresh water holding tank system. Run RV antifreeze through > the pump and faucet. > > 3. Put RV antifreeze in the head and pump into empty holding tank. Run > macerator enough to get antifreeze in lines. > > 4. Put RV antifreeze in the bilge > > What do others do? Any tips? > > Thanks, > Jeremy >
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