My Yanmar 1GM10 is feeling the cold

zikzik

zikzik

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I had planned to move my Contessa 26 from her mud berth in Kent to the solent and have her lifted out for upgrades before the cold weather set in. But we have had to move my aged mother in with us due to a terminal illness, which has ruled the move out for now. Even getting the 150 miles to the boat is out of the question currently.

This is my first winter with an inboard diesel engined boat and I am worried about the raw water cooled engine freezing with associated damage. I didn't winterise it in any way earlier when I could have done. The engine was serviced in the spring of 2011.

I trust you lot will know what must I do and what can I get away with?
 
Sorry to hear about your difficulties-

The boat, is the boat still in the water? (That will help insulate it)
If in water, did it last run, eg up a creek in the flood, in sea brackish or fresh-ish water? (more salt the better)
You can see I've been where you are.....
No one nearer you trust who can go and open the block drain tap?

I'm off to visit my 'new' boat Thurs, I'll be doing just that.

Best regards-

Nick (Rivendell)
 
Its in a North Kent mud berth, in a creek and sitting in the mud, floating less than 10 hours in 24. She was last motored out for a couple of hours in September and was last started in her berth for 45 minutes in January. the raw water sea cock is closed.
 
Almost certainly it's raw water cooled, ie no fresh water circuit which would have a/freeze leaving only the heat exchanger at risk.

Sitting on the mud will help somewhat, but it's all relative, a degree or three, probably Ok, a long freeze like last year hmm....

N
 
Thanks Nick. With nobody nearer, it looks as if I have to hope for plus zero temps and get down there as soon as I can
 
If it's any reassurance my 2GM20 (raw water cooled) engined boat was still in the water over Christmas 2010/11 when the Marina (Lymington) actually froze over. The engine hadn't been winterised. No ill effects.
 
zikzik said:
Thanks Nick. With nobody nearer, it looks as if I have to hope for plus zero temps and get down there as soon as I can
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I left my boat in last winter on the crouch with no winterisation done at all.
She started first time on the key. Your boat is insulated in the water as water temp is warmer than air temp and should fair better in the water/mud than it would on the hard with all surfaces exposed to sub zero temps.
 
I leave my boat on a drying berth all winter with a 1GM10 with no probs so far. Last winter was nasty and we have a cold snap forecast but I would not worry too much.
 
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