Marine heating...
 

The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653

On Wed, 10 Nov 2004 07:46:01 -0500, Harry Krause
wrote:

Short Wave Sportfishing wrote:
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom


How much heat do you need? Under what weather conditions will you be
using the boat?

I need enough heat that I don't get cold - say like a town car sized
space for instance - it's about the same total amount of space that
will be enclosed. As to weather, it's only a 20' boat, so sea
conditions light certainly, but it could be cold, snow, rain, etc.

As you know, above the waterline boats really are not insulated, and
they typically have single-pane glass, and they have a lot of cabintop
area, compared to cabinside area, so you will have a tremendous amount
of heat loss. If you are planning to head out on the Connecticut
waterways from late November through March, you are going to have one
hell of a time keeping a boat cabin warm. Especially the cabin on a
gasoline powered boat. There are some heaters/stoves around that burn
diesel fuel, and you might be able to engineer one of these so that you
have heat even when the engine is not running. Remember the first word
in boat heating...the word is ventilation.

You make some good points, but I plan on using some flotation foam as
insulating material in the cabin space. I understand about the
ventilation choices - that's why I wanted to pull heat off the engine
instead of using a separate heating source requiring ventilation.

Check with Chuck...he's a NW boater and even in August, he has the boat
furnace going...since the water temp at that point is only about 32.5F !

I was hoping he might chime in on this one.

Later,

Tom

"Beware the one legged man in a butt
kicking contest - he is there for a
reason."

Wun Hung Lo - date unknown

Short Wave Sportfishing wrote:
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653

I probably missed a bunch about your plans. Is the heating requirement
while underway or at the dock? It would seem that underway you are
limited to whatever you can generate by capturing engine heat or that
available for conversion to electric by the engine and/or generator, if
equipped. A set of quality and heavy thermal underwear will help. :-)


If the heating requirement is at the dock, more options exist.

Eisboch

On Wed, 10 Nov 2004 07:56:34 -0500, Eisboch wrote:

Short Wave Sportfishing wrote:
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

I probably missed a bunch about your plans. Is the heating requirement
while underway or at the dock? It would seem that underway you are
limited to whatever you can generate by capturing engine heat or that
available for conversion to electric by the engine and/or generator, if
equipped. A set of quality and heavy thermal underwear will help. :-)

I haven't really talked much about it because it's been in the works
for almost a year. I've just finished up the design now - hobby, get
all the ducks in a row, before I start kind of thing.

It's more of a "let's get the temperature up to the point where I can
warm up" kind of heat while on the water. I don't intend on having a
sauna in the pilot house. I mentioned to Harry that the space is about
the size of a town car and the required temperature would be about the
same as it would be in winter traveling in a car.

Here's another thought. How much heat can I obtain having a fair
amount of eisenglass using solar heating?

If the heating requirement is at the dock, more options exist.

Nope - this is strictly a trailer operation for cod in Boston Harbor
or winter flounder off the Westerly Reef. Weather gets snarky, I'm
outa there. :)

Take care.

Tom

"The beatings will stop when morale improves."
E. Teach, 1717

Short Wave Sportfishing wrote:


I need enough heat that I don't get cold - say like a town car sized
space for instance - it's about the same total amount of space that
will be enclosed. As to weather, it's only a 20' boat, so sea
conditions light certainly, but it could be cold, snow, rain, etc.




Later,

Tom

"Beware the one legged man in a butt
kicking contest - he is there for a
reason."

Wun Hung Lo - date unknown

Recognizing that I don't know what I am talking about, a couple of thoughts:

1. Insulation only retards the transfer of heat from the cabin to the
outside. You need heating BTU capacity capable of overcoming the loss,
given the desired cabin temp. The higher the desired cabin temp, the
greater heat transfer for a given amount of insulation. That's where the
thermal underwear comes in handy.

2. Is the engine fresh water or raw water cooled? Seems to me that a
heat exchanger working at 180-200 degrees will work better than one
using 140 degree water.

Eisboch

On Wed, 10 Nov 2004 12:26:51 GMT, Short Wave Sportfishing
wrote:
My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.
========================================

Small commercial fishing boats have been using engine coolant heating
in the cabin for a long time. There are a lot of variables. For
example, the closed cooling side of a FWC engine will typically have
the highest available temperature (160 to 170 F), but a raw water
engine wouldl have a lower coolant temperature.

My former Bertram 33 had a full flybridge enclosure (lots of
protection but somewhat drafty). We used to run in cold weather
using just a 1500 watt electric heater. It was comfortable in
temperatures down into the 30s. You could do something similar with a
lightweight Honda generator on the back deck. They are very quiet and
it would have other uses. I'd get a battery operated CO detector for
the cabin in any case.

On Wed, 10 Nov 2004 12:26:51 +0000, Short Wave Sportfishing wrote:

The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.


I looked into engine heating when I had my 20-footer, and it's pretty easy
(What kind of engine do you have?) You just "interrupt" the bypass between
the water pump and the thermostat and take it to a radiator. Same system
as a car.

I suspect you can do the same as what's in my van: two radiators in
separate locations. Works pretty well.

Alternatively you could use any of several portable or built-in propane
heaters, like they use in RVs. The portable ones are OK as long as you can
tie them down somehow and have ADEQUATE VENTILATION

Lloyd Sumpter
"Far Cove" Catalina 36 - c/w Dickinson diesel heater

On Wed, 10 Nov 2004 08:16:54 -0500, Eisboch wrote:

Short Wave Sportfishing wrote:


I need enough heat that I don't get cold - say like a town car sized
space for instance - it's about the same total amount of space that
will be enclosed. As to weather, it's only a 20' boat, so sea
conditions light certainly, but it could be cold, snow, rain, etc.

Recognizing that I don't know what I am talking about, a couple of thoughts:

1. Insulation only retards the transfer of heat from the cabin to the
outside. You need heating BTU capacity capable of overcoming the loss,
given the desired cabin temp. The higher the desired cabin temp, the
greater heat transfer for a given amount of insulation. That's where the
thermal underwear comes in handy.

That's a good point and one I hadn't considered. And I do wear those
expedition grade thermals when I do go out in this weather. The
problem is that I still get cold - in particular my feet and hands.
And once that starts, I'm toast - cold toast. :)

It sounds odd, but it has to do with the medicine that I take for the
RA - I have very thin skin and bruise easily, so there really isn't
much in terms of blood to work with. I have a need for heat.

I'm probably the only person you will ever hear about who actually
uses a down filled comforter during the summer when the A/C is on.
Drives my wife nuts. :)

2. Is the engine fresh water or raw water cooled? Seems to me that a
heat exchanger working at 180-200 degrees will work better than one
using 140 degree water.

Oh - neat idea!

Later,

Tom

On Wed, 10 Nov 2004 08:29:00 -0500, Wayne.B
wrote:

On Wed, 10 Nov 2004 12:26:51 GMT, Short Wave Sportfishing
wrote:
My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.
========================================

Small commercial fishing boats have been using engine coolant heating
in the cabin for a long time. There are a lot of variables. For
example, the closed cooling side of a FWC engine will typically have
the highest available temperature (160 to 170 F), but a raw water
engine wouldl have a lower coolant temperature.

I didn't know that. When I was a kid, the lobsta guys used old French
made coal stoves in the cabins - they could keep the heat low and just
ticking over to keep the chill off.

One of my favorite memories was sitting off Baker's Island with one of
my high school buddies and his lobsta fishing father eating a fresh
made chowdah in the cabin of the lobsta boat.

My former Bertram 33 had a full flybridge enclosure (lots of
protection but somewhat drafty). We used to run in cold weather
using just a 1500 watt electric heater. It was comfortable in
temperatures down into the 30s. You could do something similar with a
lightweight Honda generator on the back deck. They are very quiet and
it would have other uses. I'd get a battery operated CO detector for
the cabin in any case.

That's a thought, but it's only 20 feet long - I'm trying to avoid
using a small generator, although I do have one.

Later,

Tom

On Wed, 10 Nov 2004 07:09:06 -0800, Lloyd Sumpter
wrote:

On Wed, 10 Nov 2004 12:26:51 +0000, Short Wave Sportfishing wrote:

The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.


I looked into engine heating when I had my 20-footer, and it's pretty easy
(What kind of engine do you have?) You just "interrupt" the bypass between
the water pump and the thermostat and take it to a radiator. Same system
as a car.

I suspect you can do the same as what's in my van: two radiators in
separate locations. Works pretty well.

Thanks for the info. Appreciate it.

Later,

Tom

You need a Red Dot heater.

On 10 Nov 2004 17:28:47 GMT, (Gould 0738) wrote:

You need a Red Dot heater.

Ah - very informative.

Thanks.

Later,

Tom

Gould 0738 wrote:
You need a Red Dot heater.

I am getting a real chuckle out of some of Chuck's recent posts. For a
guy with superb writing skills, he is becoming a man of few words, yet
gets the point across.

"consider cork"

and this one ...

Eisboch

On Wed, 10 Nov 2004 13:35:29 -0500, Eisboch
wrote:

Gould 0738 wrote:
You need a Red Dot heater.

I am getting a real chuckle out of some of Chuck's recent posts. For a
guy with superb writing skills, he is becoming a man of few words, yet
gets the point across.

"consider cork"

and this one ..

At least he could have attached a URL.

Efficient indeed. :)

Take care.

Tom

"The beatings will stop when morale improves."
E. Teach, 1717

My thought was to pull heat off the engine much like the radiator
system in a car.

Check out http://www.heatercraft.com/

I have one of their "1H" models in my ski boat. Works great! Even in a
totally open ski boat you can get enough heat out of the vents to keep the
driver warm and toasty. The vents pull out and extend on hoses and you will
often see the observers covered in a blanket with the heater vent tucked up
underneath keeping them warm as well. I am sure that if you had any kind of
enclosure you could get enough heat to keep the cabin reasonably warm.

You have to be running, of course.

If you want heat while the engine is off then I would recommend a small
portable propane unit. I have a propane heater similar to this one:
http://www.mrheater.com/productdetail.asp?id=675 (the double head) that I
used to heat the flybridge of my 36' Carver. I never used both burners at
one time on the boat, and often I had trouble getting turned down low enough
so that it didn't roast us out. If you use something like this take extra
precautions that it is tied down and can't possibly tip over.

Rod McInnis

"rmcinnis" wrote:

My thought was to pull heat off the engine much like the radiator
system in a car.

Check out http://www.heatercraft.com/

I have one of their "1H" models in my ski boat. Works great! Even in a
totally open ski boat you can get enough heat out of the vents to keep the
driver warm and toasty. The vents pull out and extend on hoses and you
will often see the observers covered in a blanket with the heater vent
tucked up underneath keeping them warm as well. I am sure that if you had
any kind of enclosure you could get enough heat to keep the cabin
reasonably warm.

Rod McInnis

Rod,

That little "1H" unit would work nicely on my boat too.
Approx how much did it cost?

Gary

On Wed, 10 Nov 2004 12:03:13 -0800, "rmcinnis"
wrote:


My thought was to pull heat off the engine much like the radiator
system in a car.

Check out http://www.heatercraft.com/

I have one of their "1H" models in my ski boat. Works great! Even in a
totally open ski boat you can get enough heat out of the vents to keep the
driver warm and toasty. The vents pull out and extend on hoses and you will
often see the observers covered in a blanket with the heater vent tucked up
underneath keeping them warm as well. I am sure that if you had any kind of
enclosure you could get enough heat to keep the cabin reasonably warm.

This is a curious and somewhat confusing image. An open ski boat,
towing a skier and the driver/observer huddling under blankets with
hoses from the heating duct to warm up.

And I thought horse owners were nuts.

Mrs. E excepted of course. ;)

You have to be running, of course.

Of course. :)

If you want heat while the engine is off then I would recommend a small
portable propane unit. I have a propane heater similar to this one:
http://www.mrheater.com/productdetail.asp?id=675 (the double head) that I
used to heat the flybridge of my 36' Carver. I never used both burners at
one time on the boat, and often I had trouble getting turned down low enough
so that it didn't roast us out. If you use something like this take extra
precautions that it is tied down and can't possibly tip over.

Part of the exercise is not to vent an enclosed space other than
ambient drafts.

However, I appreciate the info and I've got it in my to check out
later bookmark.

Thanks.

By the by, just kidding about the skiing.

Not!! :)

Later,

Tom

On Wed, 10 Nov 2004 12:26:51 GMT, Short Wave Sportfishing
wrote:

The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653

I went with propane for my cabin cruiser. 3000 BTU keeps the cabin t-shirt
warm in 40F or lower temps.

I couldn't find a marine unit so I installed a RV catalytic like the one
shown in the link that follows.

My wife and I camp on our boat spending an entire weekend day and night. So
we might have different needs since we are anchored most of the time.
anyway, here is a link to one similar to mine.

http://www.campingworld.com/browse/s...m?skunum=19332





Regards
John S

I would rather be boating!

A very practical problem is windshield fogging. This happened on my boat one
cool evening this Fall, and after I realized it wasn't getting foggy
outside, I had my daughter up on the foredeck wiping the windows constantly
while I sponged them off inside - just so we could see. The amount of sudden
condensation was formidable. (Trojan 26.)

Is general pilothouse heating adequate for this? I suspect not. Anyone heat
their windshields, the way the "defrost" setting works in an automobile?

====

Charles T. Low
www.boatdocking.com

====

"Short Wave Sportfishing" wrote in message
...
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653

Charles T. Low wrote:
A very practical problem is windshield fogging. This happened on my boat one
cool evening this Fall, and after I realized it wasn't getting foggy
outside, I had my daughter up on the foredeck wiping the windows constantly
while I sponged them off inside - just so we could see. The amount of sudden
condensation was formidable. (Trojan 26.)

Is general pilothouse heating adequate for this? I suspect not. Anyone heat
their windshields, the way the "defrost" setting works in an automobile?

====

Charles T. Low
www.boatdocking.com

====


Howdy, Charles,

I've never seen a window defogger setup on a boat. Automotive
defogger/defroster systems use heat plus run the A/C unit to remove the
moisture that is condensing. I recall having cars without air
conditioning and the heat only defogger was not as effective.

An exotic solution would be having your windows coated with transparent
but conductive coating such as Indium Tin Oxide and then pass current
through the coating to heat the windshield. Military and commercial
airplanes use this technique on many of the cockpit display panels and
windshields. Also, I wonder if there is an after market automotive thin
wire defroster that could be applied to the windows, similar to the
electric heater wires in the rear windows of most cars.

Eisboch

http://www.jcwhitney.com/autoparts/P...p-8718/c-10101



"Charles T. Low" [withoutUN] wrote in message wsgroups.com...
A very practical problem is windshield fogging. This happened on my boat one
cool evening this Fall, and after I realized it wasn't getting foggy
outside, I had my daughter up on the foredeck wiping the windows constantly
while I sponged them off inside - just so we could see. The amount of sudden
condensation was formidable. (Trojan 26.)

Is general pilothouse heating adequate for this? I suspect not. Anyone heat
their windshields, the way the "defrost" setting works in an automobile?

====

Charles T. Low
www.boatdocking.com

====

"Short Wave Sportfishing" wrote in message
...
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653

"Charles T. Low" [withoutUN] wrote in message wsgroups.com...
A very practical problem is windshield fogging. This happened on my boat one
cool evening this Fall, and after I realized it wasn't getting foggy
outside, I had my daughter up on the foredeck wiping the windows constantly
while I sponged them off inside - just so we could see. The amount of sudden
condensation was formidable. (Trojan 26.)

Is general pilothouse heating adequate for this? I suspect not. Anyone heat
their windshields, the way the "defrost" setting works in an automobile?

====

Charles T. Low
www.boatdocking.com

====

"Short Wave Sportfishing" wrote in message
...
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653


@ Charles:

You can buy electric heater/fans which you may be able to instal and
blow warm air on the windshield. This will ad some fire hazards so
watch out. A quick fix would be any little 12V fan placed to blow on
the windshield.

I tried Anti Fogging compound on my windshileds with NO effect.

@ Tom:
I think running heat of the motor should be possible but take in mind
that you are adding all the headaches that come with water
heatexchangers and leaks, pipes ... not a good thing for reliability.
If you have the space and cash then maybe get an external heater. They
make them for cars and they run of diesel or gas and heat the/a
watersystem one manufacturer is webasto.

Matt

"Gary Warner" wrote in message
...
That little "1H" unit would work nicely on my boat too.
Approx how much did it cost?

Mine came with the boat, so I don't have first hand experience buying them,
but here is one online that I found:
http://www.marine-products.com/singl...cid=56&pid=225

Rod

"Charles T. Low" [withoutUN] wrote in message
sgroups.com...
Is general pilothouse heating adequate for this? I suspect not. Anyone
heat
their windshields, the way the "defrost" setting works in an automobile?

The only time I have had this problem is during the lighted boat parades,
when it is really cold out, moving really slow and have a bunch of people
steaming up the flybridge.

Fortunately, the generator is running anyway, so I just take a small
electric heater and set it to blow on the windshield.

Rod

I built my own. Works very well. Here's the link:
http://www.seanet.com/~jasonrnorth/heatpic.htm
Enjoy-
JR
Short Wave Sportfishing wrote:
The more I get into designing the new interior of this '68 Chris Craft
Corsair I want to turn into a winter boat, the more I get to wondering
about different things. One of which was brought home this morning as
I took the dogs out for exercise.

Having arthritis, cold isn't my friend. Adding to that, I don't enjoy
the cold all that much - never have. I tolerate it, but I don't like
it. Therefore, it is paramount in a winter boat to have....

HEAT.

My thought was to pull heat off the engine much like the radiator
system in a car. The way the design is developing, there will be an
interior cabin of a sort or at least a place where one could get out
of the wind, rain, etc. Think of a Parker/Steiger type pilot house
without the adjoining cuddy space. This is where I would put the
heating unit.

I'm just not sure this is a valid way of heating this small space.

Any thoughts?

Later,

Tom
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."

Izaak Walton "The Compleat Angler", 1653

On Sat, 13 Nov 2004 17:43:35 -0800, JR North
wrote:

I built my own. Works very well. Here's the link:
http://www.seanet.com/~jasonrnorth/heatpic.htm

Very nice. I like those nice tight turns in the tubing too.

Are you a plumber by chance? Plumbing and I don't really get along,
but I'm always willing to give it another try.

Later,

Tom

Short Wave Sportfishing wrote:
On Sat, 13 Nov 2004 17:43:35 -0800, JR North
wrote:


I built my own. Works very well. Here's the link:
http://www.seanet.com/~jasonrnorth/heatpic.htm


Very nice. I like those nice tight turns in the tubing too.

Are you a plumber by chance? Plumbing and I don't really get along,
but I'm always willing to give it another try.

Later,

Tom

Tom, are you looking for a cabin heater? The reason I ask is that I
have a compact heater that was originally installed in a John Deere
tractor that I bought a few years ago. I have since removed the winter
enclosure and heater (it was in the way of my knee) and don't use either.

The heater ties into the cooling system of the engine, running the
water/antifreeze mix through it. It has a built in 12 volt fan with (I
think - I'd have to look at it again) two fan speeds.

If you think you can use it, you are welcome to it. Right now it is just
sitting in a corner of the barn collecting dust.

Eisboch

On Sun, 14 Nov 2004 06:33:48 -0500, Eisboch
wrote:

Short Wave Sportfishing wrote:
On Sat, 13 Nov 2004 17:43:35 -0800, JR North
wrote:


I built my own. Works very well. Here's the link:
http://www.seanet.com/~jasonrnorth/heatpic.htm


Very nice. I like those nice tight turns in the tubing too.

Are you a plumber by chance? Plumbing and I don't really get along,
but I'm always willing to give it another try.

Later,

Tom

Tom, are you looking for a cabin heater? The reason I ask is that I
have a compact heater that was originally installed in a John Deere
tractor that I bought a few years ago. I have since removed the winter
enclosure and heater (it was in the way of my knee) and don't use either.

The heater ties into the cooling system of the engine, running the
water/antifreeze mix through it. It has a built in 12 volt fan with (I
think - I'd have to look at it again) two fan speeds.

If you think you can use it, you are welcome to it. Right now it is just
sitting in a corner of the barn collecting dust.

Actually, it's perfect. Is your email addy good? We can discuss this
offline.

Later,

Tom

Short Wave Sportfishing wrote:
On Sun, 14 Nov 2004 06:33:48 -0500, Eisboch
wrote:


Short Wave Sportfishing wrote:

On Sat, 13 Nov 2004 17:43:35 -0800, JR North
wrote:



I built my own. Works very well. Here's the link:
http://www.seanet.com/~jasonrnorth/heatpic.htm


Very nice. I like those nice tight turns in the tubing too.

Are you a plumber by chance? Plumbing and I don't really get along,
but I'm always willing to give it another try.

Later,

Tom

Tom, are you looking for a cabin heater? The reason I ask is that I
have a compact heater that was originally installed in a John Deere
tractor that I bought a few years ago. I have since removed the winter
enclosure and heater (it was in the way of my knee) and don't use either.

The heater ties into the cooling system of the engine, running the
water/antifreeze mix through it. It has a built in 12 volt fan with (I
think - I'd have to look at it again) two fan speeds.

If you think you can use it, you are welcome to it. Right now it is just
sitting in a corner of the barn collecting dust.


Actually, it's perfect. Is your email addy good? We can discuss this
offline.

Later,

Tom

Check your email. If it didn't work, I can be reached at:

erikssonrichard@yahoo (dot) com

Eisboch

Another method used to heat aircraft windows is fine wire (30-50 micron
diameter). Some of the smaller planes use 24VDC heaters and simple
on-off controllers.
http://www.bekaert.com/corporate/pro...l%20fibres.htm is a
manufacturer of such wire in various alloys. Generally, the wires are
embedded into a urethane inner layer and connected to bus bars on
either side. They also put at least one temperature sensor in the
window. The currents can be quite large in order to get 2-3
watts/square inch. De-icing reqires 4-5w/sqin.

Andy Estes
www.estestech.com


Eisboch wrote:
Charles T. Low wrote:
A very practical problem is windshield fogging. This happened on my
boat one
cool evening this Fall, and after I realized it wasn't getting
foggy
outside, I had my daughter up on the foredeck wiping the windows
constantly
while I sponged them off inside - just so we could see. The amount
of sudden
condensation was formidable. (Trojan 26.)

Is general pilothouse heating adequate for this? I suspect not.
Anyone heat
their windshields, the way the "defrost" setting works in an
automobile?

====

Charles T. Low
www.boatdocking.com

====


Howdy, Charles,

I've never seen a window defogger setup on a boat. Automotive
defogger/defroster systems use heat plus run the A/C unit to remove
the
moisture that is condensing. I recall having cars without air
conditioning and the heat only defogger was not as effective.

An exotic solution would be having your windows coated with
transparent
but conductive coating such as Indium Tin Oxide and then pass current

through the coating to heat the windshield. Military and commercial
airplanes use this technique on many of the cockpit display panels
and
windshields. Also, I wonder if there is an after market automotive
thin
wire defroster that could be applied to the windows, similar to the
electric heater wires in the rear windows of most cars.

Eisboch

Some fighter aircraft like the F-16 use warm air to keep the window
from fogging over. A few use electrical means, either wires or
Transparent Conductive Oxides like ITO (indium tin oxide).

Andy Estes