Will diesel heater skin fitting be below water line when heeling?

[Crinan12]

Hi all
I was really pleased with my self yesterday when I fitted a diesel heater to my boat
I was about to drill a hole for in the hull for the skin fitting and someone mentioned to me to make sure that the skin fitting would not be underwater when heeled over. I never even thought about that to be honest! I'm not sure how much my boat heels. Do you think the pink dot in the photo is an okay position for the exhaust fitting? The heater is mounted in the forward part of the cockpit locker.
I suppose the alternative is to buy more exhaust pipe and run it all the way through the cockpit locker and out the back of the boat.
Thanks

 

[Achosenman]

High up through the transom would be my solution. It’s where mine goes...so far without issue.

 

[Crinan12]

Yeah I would have done that but my heater is right at the front of the cockpit locker
So I wondered if I could go out sideways through the hull where that pink dot is

 

[oldgit]

High up through the transom would be my solution. It’s where mine goes...so far without issue.

+1 less likely to give rise to exhaust noise and if you raft, annoy alongside boat.
.......also greatly eliminates chances of neat round holes burnt in fenders.

 

[Spyro]

Maybe not under water as such but definitely there will be waves that push up that far. Transom would be my choice.

 

[webcraft]

It's not difficult to run the exhaust out through the transom.

- W

 

[Boathook]

+1 less likely to give rise to exhaust noise and if you raft, annoy alongside boat.
.......also greatly eliminates chances of neat round holes burnt in fenders.

Agree.

 

[Crinan12]

Ach not the answer I wanted but thanks
No it's not difficult just need to buy some additional exhaust pipe and insulation
Thanks

 

[pcatterall]

View attachment 77210
Hi all
I was really pleased with my self yesterday when I fitted a diesel heater to my boat
I was about to drill a hole for in the hull for the skin fitting and someone mentioned to me to make sure that the skin fitting would not be underwater when heeled over. I never even thought about that to be honest! I'm not sure how much my boat heels. Do you think the pink dot in the photo is an okay position for the exhaust fitting? The heater is mounted in the forward part of the cockpit locker.
I suppose the alternative is to buy more exhaust pipe and run it all the way through the cockpit locker and out the back of the boat.
Thanks

Positioning the heater to minimise either long exhaust or long ducting runs will always be a compromise. I have seen exhaust through cabin roofs and in one case 2 smaller heaters (one fwd one aft) for just this reason. With your proposed installation you would need to balance your pros with the cons ( alluded to in various replies) If ,on balance, you can live with the cons then go for your solution. ( have a bung if you feel you may sail really heeled over!!

 

[Crinan12]

A bung, that's a good idea. Would just need to remember to use it!
We're on a mooring so I guess we won't be using fenders much so not really an issue with them burning
Thanks

 

[PCUK]

Have you enough height in that position for the swan neck above the fitting?

 

[Crinan12]

Yes I can make a swan neck just above it
Cheers

 

[Quandary]

If you exhaust through the side you will live to regret it, sooner or later you are going to be in a marina or harbour among other boats on a cold night, or do you never envisage that happening. But if the exhaust is too long or convoluted it will not be safe either, most heaters have defined limits for exhaust pipe length. It might be better to go for a heater position further aft with the exhaust through the transom as recommended above, even if it does need a few more feet of heating ducting. If you ever decide to change the boat it will be a hard sell with the arrangement you were proposing.
You have made a mistake, easier to correct it now?

 

[Crinan12]

I really don't see us being in marinas much and if we did we could just use our wee electric heater
Yeah I could out the heater further back but I really want to avoid that, i find there is so much heat loss with the longer run
Thankfully no mistake made yet - no holes have been drilled !
I'll have another look when next at boat and see what's best

 

[martinaskey]

My exhaust port is midway up the hull on the starboard quarter. Exhaust pipe up looped as high as I can get it under the deck. I imagine it is regularly immersed but never had a problem in 10 years. However, I don't run the heater while sailing.
Martin

 

[Crinan12]

What about where the purple dot is? Is that just madness ?
Martin we will never have our on when sailing either I wouldn't have thought

 

[LadyInBed]

What about where the purple dot is? Is that just madness ?
Martin we will never have our on when sailing either I wouldn't have thought

Yes, verging on stupidly!
Exhaust gas slopping around in the cockpit isn't a good idea.

 

[Crinan12]

Sorry bad photo
I mean going through that bit of the boat but to the other side I.e towards the sea not the cockpit
Thanks

 

[fredrussell]

Can’t help with your query but just wanted to say your boat is very easy on the eye. Nice sleek lines.

 

[Crinan12]

Thanks fred!
1st boat and very proud !