SailBlogs
Bookmark and Share
Issuma
Heating System
Richard
Tue Feb 22 18:39:49 EST 2011

The heating system on Issuma consists of two drip-pot diesel heaters. The pilothouse is heated by a Dickinson Lofoten heater, which is also used for cooking (though most cooking is done by a gas stove/oven). The forward part of the boat is heated by a Dickinson Alaska heater (see previous blog entry).

Fuel for the heaters is gravity-fed from the daytank, through a fuel
filter/water separator. The drip-pot diesel heaters will not run if there is water in the fuel. A little water in the fuel will result in it boiling loudly as it enters the combustion chamber, and the heater might stay running, but with a lot of water in the fuel, the flame will go out, and the regulator needs to have the water removed from it (there are no drain plugs, so the way I've done this is to suck it out with a copper tube).

Between these two heaters, the inside temperature can be about 25 degrees C higher than the outside temperature, or about 20 degrees higher if it is windy.

This works well down to about -10C/14F (and not so well at -20C/-4F).

Previously, a wood stove was used. This put out a decent amount of heat, but had to be tended every hour or two, so, over the course of 24 hours, didn't put out as much heat as a diesel heater did. The wood stove was more suitable for heating when there are several people aboard, to share the task of tending the stove.

Wed Feb 23 5:20:04 EST 2011 | georgelewisray
Do you use the balanced air system with a separate outside stack for the intake air? .... .. What happened to the Sigmar Heater? Did it work alright?
Wed Feb 23 7:04:28 EST 2011 | Richard Hudson
Neither Dickinson heater has a balanced air intake, so both are drawing intake air from the cabin.

The Sigmar 120 heater I used earlier had the ability to draw air from outside, but I never configured it that way. I ran that heater both in the location up forward and in the pilothouse, and it worked well in both places, but just wasn't big enough for heating in winter. The balanced air intake pipe that heater had on the bottom did pull quite a bit of moist air out of the bilge, and was a nice feature.

When I replaced the Sigmar 120 with the Lofoten, I tried installing the Sigmar in the bedroom, for use as a third heater for when it was really cold. I used an existing vent hole in the centerboard trunk for the chimney, which involved two 90 degree turns, and the draft never worked out. It would work if I put the chimney thru the deck, but it was a temporary install for use in -15 to -20 temperatures only (otherwise it is too big a heater for the bedroom), and the cold weat
Wed Feb 23 7:28:12 EST 2011 | Richard Hudson
Forgot to mention, I originally bought the Sigmar 120 heaterpartly because of the balanced air intake, which I figured would help in getting it working properly under sail.

I abandoned the idea of getting either of these heaters working under sail. Neither chimney location is free of downdrafts while sailing, and both have high stacks, which prevent backdrafts, but also get in the way of sails and lines if trying to sail with them.

While it would be comfortable to have a warm boat while sailing, no heaters are really reliable (diesel heaters stop when out of fuel, or too much water or dirt in the fuel, or when chimneys fall overboard), so one always needs sufficient clothing for the temperatures one sails in. Not having a warm cabin when sailing results in wearing suitable clothing for the temperatures, so isnt a real disadvantage.
Fri Feb 25 15:47:37 EST 2011 | will vandorp
looks warm and delicious. ready for spring yet?
Sat Feb 26 19:06:33 EST 2011 | Richard Hudson
I am more than ready for any weather warm enough to melt the ice around the boat that is keeping it stuck at the dock :).
Forward Heater
Richard
Mon Feb 21 18:48:48 EST 2011

The Dickinson Alaska heater in the forward part of the boat. This heater puts out about half as much heat as the Lofoten heater in the pilothouse.

There are 24 volt (Issuma's electrical system is 24 volt) computer fans on the wall that blow the warm air off the chimney into the boat. The plywood wall is covered with sheet aluminum to keep heat away. A strip of aluminum foil is hung from the ceiling to reflect heat back into the main part of the boat (this is only used on cold days in the winter at the dock).

Not shown in the picture is a barometric damper, which injects room air into the chimney, so less heat is wasted going up the chimney and out of the boat. Putting in the barometric damper made the heater put 30-40% more heat in the boat than it did when running without the barometric damper (this is partly because there is a tall stack--about 3m in total).

To be installed soon is a grating that protects things from touching the hot chimney.

Channel Entrance
Richard
Wed Feb 16 8:44:06 EST 2011, Toronto, Canada

The entrance to the harbor Issuma is in is to the right of the green daymark

Channel Marker
Richard
Wed Feb 9 7:21:05 EST 2011, Toronto, Canada

The red nun buoy in this picture is much easier to recognize than the one in yesterday's picture that was loaded with ice. This buoy is around a bend in the channel, so it doesn't get the breaking waves that the outer buoy does...I believe that is why it is not covered in ice. This part of the channel still gets swell coming in, which breaks up the ice.

Channel Marker
Richard
Tue Feb 8 10:32:04 EST 2011, Toronto, Canada

Below and to the left of the lighthouse, what looks like a floating piece of ice is actually a red nun (buoy with a pointed top), marking the entrance channel to the harbor.

Sat Mar 5 10:32:32 EST 2011 | Bonnie
oh my!
Gale
Richard
Thu Feb 3 17:10:48 EST 2011, Toronto, Canada



Gale
Richard
Wed Feb 2 18:27:16 EST 2011, Toronto, Canada

It warmed up to -10C (14F) and got windy last night and this morning. This is the entrance to the harbor where Issuma is. The waves broke up the ice a fair way into the harbor, but not as far as Issuma, which is still frozen into the ice.

Mon Feb 7 18:30:24 EST 2011 | Timothy
Your current scenario is very Endurance-like. At least you don't need to resort to eating only penguins. Although I hear you can cook ribs quite effectively aboard.
Tue Feb 8 8:31:39 EST 2011 | Richard Hudson
I'm finding it difficult to write about sailing while frozen in the ice and not sailing :). Fortunately the boat is in no danger of being crushed by pack ice, as it is docked in a very well-protected harbor.
Cold Water
Richard
Mon Jan 24 11:03:22 EST 2011, Toronto, Canada

Outside the harbor yesterday, when it was cold (-19C/-4F). The misty areas of the picture are steam coming off the water and steam from the spray when the water hits the ice-covered rocks.

Today it warmed up enough to snow (for those not used to cold climates, snow requires clouds and clouds reflect heat back to the surface, so the coldest temperatures happen when there are no clouds--ie when it is not snowing).

Mon Jan 24 14:17:23 EST 2011 | Brian
Nain harbor, 24 January 2011

http://torngats.blogspot.com/2011/01/scene-not-often-seen-trawler-in-nain.html#links
Mon Jan 24 17:33:49 EST 2011 | Richard Hudson
Thanks for the link, Brian. It certainly is surprising to see so little ice in Nain harbor in January.
Tue Feb 1 14:19:35 EST 2011 | christina
warm greetings from the frosty south, dear Issuma!
Tue Feb 1 17:35:42 EST 2011 | Richard Hudson
Thanks, Christina. I see NYC is in for freezing rain tonight. Hope you are warm and dry.
Contrast
Richard
Sun Jan 23 16:29:33 EST 2011, Toronto, Canada

In contrast to the previous picture of sailing on a beautiful summer day in Labrador, here is where Issuma is today, locked in the ice, which is now covered with snow. Being covered with snow means the ice wont get thicker as quickly (because snow is a good insulator), which is good, as the thicker the ice is, the longer Issuma will be stuck in the ice.

Mon Jan 24 6:59:40 EST 2011 | yann
nice picture,
and nice boat, isn't she?
friendly
Mon Jan 24 10:45:50 EST 2011 | Richard Hudson
Thanks, Yann. Yes, she's a nice boat.

Are you thinking you want her back :)
Mon Jan 24 12:30:20 EST 2011 | Jerry Levy
What's the blue boat on the far side of the harbor?
Mon Jan 24 17:32:19 EST 2011 | Richard Hudson
I dont really know anything about the blue sailboat on the other side of the harbor. It is docked in a yacht club (I'm docked at a marina). I assume it is being lived aboard, otherwise it would have been hauled for the winter, but I've never seen anyone aboard.
Tue Jan 25 12:26:19 EST 2011 | yann
no, Richard, I am happy to see her with you where you are
Becalmed
David/Richard
Fri Jan 21 7:53:58 EST 2011

As Issuma is still frozen into the ice, I can only dream about sailing :), so here is a picture of Issuma this summer in Labrador.

Fri Jan 21 14:41:43 EST 2011 | Brian
Apart from white hills it almost no change.
Fri Jan 21 15:26:24 EST 2011 | Jerry Levy
Happy new year, Richard! It's snowing a little in NYC now but I imagine it's no where near as cold as where you are now. I envy you being on the water, though. Best wishes.
Jerry, s/v 'Kama'
Sun Jan 23 8:51:38 EST 2011 | Richard Hudson
Brian, I'm amazed there is still no ice in Labrador.

Jerry, Happy New Year. I imagine one could still go sailing in NY harbor now, which would really be nice. Is your boat out of the water for the winter? While there is open water less than 100m from me, the boat is firmly enough held to the dock by the ice that I'm not going anywhere until it melts.
Sun Jan 23 12:49:17 EST 2011 | Jerry Levy
Yes, my (35'9" steel double-headsail rigged) sloop boat is in winter storage now in New London, CT. I haven't seen any sails in NY Harbor recently, but I remember well sailing with you 3 years ago this month in the harbor (the last time on Super Bowl Sunday) on 'Rosemary Ruth'. That was fun! I hope she finds a new owner who can give her the attn. she deserves. A truly beautiful boat - as is your current boat. I see you've discovered the virtues of roller-furling headsails! Me too. You do have a chartplotter, don't you? For coastal sailing, I think the are great!
Sun Jan 23 16:02:46 EST 2011 | Richard Hudson
Jerry,

I have fond memories of sailing Rosemary Ruth in NY Harbor, both summer and winter.


I like the roller furling sails on Issuma, because the sails are all big (so physically harder to handle without roller furling gear) and it is a much wetter boat than Rosemary Ruth, so changing headsails on a furler-less Issuma while going to windward in a chop would be no fun.


I don't have a chartplotter on Issuma (though there is one on Rosemary Ruth), but use a laptop with charting software. A chartplotter would be better (because it is waterproof), but then I'd need all new charts, which would be really expensive. I find electronic chartplotting of any kind makes coastal sailing, especially singlehanding into harbors, much easier.
Mon Jan 24 9:57:48 EST 2011 | Jerry Levy
Well, since you have a pilothouse and an inside helm you should be able to get by with the laptop/GPS/charting software. Like radar, it's best to have it within easy sight of the helm. As for the cost of new e-charts, it really varies depending on the brand/model of chartplotter you have. I have a Garmin which is pre-loaded with all US coastal charts. The micro SD for the East coast of Canada (I'm planning on a trip to Nova Scotia this summer) cost about US $150.
Mon Jan 24 10:48:24 EST 2011 | Richard Hudson
Yes, using laptops for charting only works on boats big enough to have dry places to use them from. Actually none of my instruments are easily visible from the helm, and I only steer from inside in really nasty conditions (but when sailing the windvane steers most of the time). It would be convenient to have instruments outside, but I have no faith they'd survive a big wave coming aboard if they were outside. That said, I have plans to build a box with a strong, clear, openable plastic lid that would withstand the water pressure of a wave coming aboard and mount that in the cockpit and put depth and GPS displays in it.

Best wishes on your trip to Nova Scotia, it is a nice place.

Newer ]  |  [ Older ]

 

 
Powered by SailBlogs