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TOPIC: Frozen Marina

Frozen Marina 07 Jan 2010 23:35 #1

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Hi all

I've my 2009 245 in a fresh water marina in Scotland that has now frozen over due to a spell of exceptionaly cold weather.

My engine etc should be fine as I've fitted an automatic bilge heater which is keeping the engine room at a balmy 4C to 5C.

Question: Should I be concerned about all the inch thick ice formed round the hull (apart from around the engine bay/ stern gear which is clear of ice due to the heater). Am I likely to damage the hull with the ice?

Cheers
Kenny

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Frozen Marina 07 Jan 2010 23:44 #2

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Ice can have a serious crushing effect. If you can, I would go the the berth and try to break up the ice around the hull as much as you can. Not sure how serious 1 inch might be, but......if there is a small crack formed, and water gets in, and it freezes, the expansion will cause problems, and if the cycle continues, the crack gets worse, and worse.

It is the same problem that we have with roads here in Canada....those cracks become serious potholes.

Good luck with it

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Marc
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Frozen Marina 07 Jan 2010 23:47 #3

  • mark2556
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I would have thought it would be ok, seems like you got the main problem solved, but saying that the news says its almost as cold here as it is in the North Pole -20 owch!!

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Frozen Marina 07 Jan 2010 23:49 #4

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Spitfire;402025 wrote: Ice can have a serious crushing effect. If you can, I would go the the berth and try to break up the ice around the hull as much as you can. Not sure how serious 1 inch might be, but......if there is a small crack formed, and water gets in, and it freezes, the expansion will cause problems, and if the cycle continues, the crack gets worse, and worse.

It is the same problem that we have with roads here in Canada....those cracks become serious potholes.

Good luck with it


seems like us here in the UK are not used to the cold!!

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Frozen Marina 08 Jan 2010 00:27 #5

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Are you using the electric heat in lieu of O/B water system and engine Winterizing?

.

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Frozen Marina 08 Jan 2010 00:39 #6

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Personally I would be uncomfortable with the ice. As stated, ice expands and can have a crushing effect.

Your water tank, did you treat it? Drains, I always send a small amount of the antifreeze down them as well.

Your engine, closed cooling?

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Frozen Marina 08 Jan 2010 00:52 #7

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Why not just buy a dock bubbler ?? :hammer. http://www.dockbubbler.com/

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Frozen Marina 08 Jan 2010 00:58 #8

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Wayne's World;402075 wrote: Why not just buy a dock bubbler ?? :hammer. http://www.dockbubbler.com/


I was going to suggest that...you beat me to it. Getting one in the UK in time might be a problem (maybe?).

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Marc
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Frozen Marina 08 Jan 2010 04:46 #9

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An inch of ice is no big deal, a foot of ice freezeing and thawing repeadedly will put pressure on the hull.
Hope your power stays on.

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Frozen Marina 08 Jan 2010 09:19 #10

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Christ, they're boats, not potted plants! If you don't have it already, put a little heat in the boat's cabin just to keep the hull a little warm. I routinely have six or eight inches of ice/slush/snow around mine for long periods in winter but there's always a little gap right around the hull so long as there's some heat in the boat.

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Frozen Marina 08 Jan 2010 13:45 #11

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ChancesAre;402209 wrote: Christ, they're boats, not potted plants! If you don't have it already, put a little heat in the boat's cabin just to keep the hull a little warm. I routinely have six or eight inches of ice/slush/snow around mine for long periods in winter but there's always a little gap right around the hull so long as there's some heat in the boat.


As long as there is a gap at the hull...no issue...but if the ice moves up and down against the hull it will cut into the F/G so if you have ice...then open water that can have wave action....or when the ice starts to break up......you could have a problem. I'm not sure about only an inch.....if that is a concern or not.....certainly you need more for the crushing action to be an issue.

Another issue is the internal water system...fresh water..sink trap...shower if any....these will freeze up sooner than the engine.

Larry

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Larry

Frozen Marina 08 Jan 2010 13:52 #12

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Seldom have ice in our marina, almost never in fact. So the only thing I can add is that when we did have a thin layer of ice a few years ago, the only "damage" was that it scraped off the bottom paint at the waterline.

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Frozen Marina 08 Jan 2010 17:36 #13

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Thanks for your thoughts guys.

I have already drained the water tank & water heater, and poured RV anti-freeze into the head.

I've 2 low-wattage heaters in the cabin, 1 automatic bilge heater, a GSM alarm system that monitors the temperature in the engine bay (which then sends me a SMS message if the temperate drops below 3C), and it also monitors the battery voltage and mains power. If it's unhappy it shouts (SMS and/or phone call). It also send me a daily SMS to say "I'm OK and still working!"

So, worst case should be that the power fails, and I'll then get an SMS to advise that I should get up there and do something about it (I'm a 20 mins drive from the marina).

The engine has not been winterised as I have been using it during the winter so far, and thus running the engine every so often.

I know it's a gamble, but I think I've taken enough precautions and steps to alert me before any engine damage.

The only thing of course is the ice coverage in the marina, and hence the question re damage to gelcoat etc.

Cheers
Kenny.

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Frozen Marina 08 Jan 2010 18:52 #14

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Kenny, It sounds like you have taken many steps to prevent harm to your boat. As Wayne suggested, you can get a machine that creates current around the hull of the boat. Water flow will keep the ice at bay, or heat the cabin so the ambient temperature around the boat is above 32 F/0 C. Personally I would do one or the other. It would be a small investment vs. the cost of repairing your hull.

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Phil, Vicky, Ashleigh & Sydney
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Frozen Marina 08 Jan 2010 19:19 #15

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Kenny,

Don't worry - there is nothing more you can do anyway.You have heat in the boat. Your boat is in the water which has a insulating effect. I don't know if your boat is moored at a floating finger pier but if it is you most probably don't have any wind at present with the high pressure weather system but when you get a little bit of wind the boat will move around and keep the ice away from the hull.
1" of ice is not going to cause you squeeze on the hull.When you do start to get wind it will change your current weather to more warmer temperature anyway.

We have had -11 to -15°C (10-15°F) for about 2 weeks now I checked my boat last night and all is OK. (I have a little heater in the engine room which once the weather warms up I will move to the cabin to take out any dampness. ). Because of the heat in the engine room I haven't even drained the block on the salt water side. A lot of the guys Stateside worry about power cuts which seem to be common place but here and I think in Scotland they are rare.

If you want some good advice on cold weather conditions and what your boat can put up with always read posts from Chancesare. He's the best with advice on that subject.

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Frozen Marina 08 Jan 2010 20:26 #16

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Kenny,

Need to catch up with you soon to talk about this automatic text/call gadget you have, sounds good. I have got 2 tube heaters fitted into the engine area which is keeping the chill of nicely, however, I got Colin to drain the engine today as extra precaution.

Hopefully see you soon.

Chris

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Frozen Marina 10 Jan 2010 00:42 #17

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Hi Chris

I got the GSM device from a company in Lithuania via eBay. Fantastic bit of kit. Means I don't have to worry about loads of things such as temperature, power, or whether someone has entered the cabin; as it's now all covered by the alarm system.

I'll show you what I've done next time your up (and I'm there too).

Cheers
Kenny

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Frozen Marina 10 Jan 2010 01:19 #18

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id be more worried about the lake breaking up with wind and the ice pack headed for your hull Ive seen sheet of ice cross roads on lakes when i was in New England from the wind.

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Frozen Marina 10 Jan 2010 01:25 #19

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id be more worried about the lake breaking up with wind and the ice pack headed for your hull Ive seen sheet of ice cross roads on lake when i was in New England from the wind.

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Frozen Marina 10 Jan 2010 09:33 #20

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Cheers kenny,hope to see you soon. Next time I will be up is next sunday

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Frozen Marina 10 Jan 2010 11:15 #21

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Hello Kennyh,
can you send address for Lithuanian company for device ?

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Frozen Marina 10 Jan 2010 22:16 #22

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Have a look at the manufacturer's website here:

http://www.topkodas.lt/

I bought the module (GT Auto) from them via eBay. - Highly recommended (my own personal opinion of course).

Cheers
Kenny

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