Calculating heating requirements on a boat - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Out There > Cruising & Liveaboard Forum > Living Aboard
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 03-23-2009
zAr zAr is offline
Senior Member
 
Join Date: Feb 2009
Posts: 138
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 6
zAr is on a distinguished road
Calculating heating requirements on a boat

So, I want to purchase a CS36T to liveaboard in the Toronto area. This will be my first boat. How do I go about calculating the heating requirements for wintering? How many BTU's should I be looking at? Would a Dickinson P9000 propane heater be fine or do I need some serious heat like Espar or Webasto?
Reply With Quote Share with Facebook
  #2  
Old 03-23-2009
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,398
Thanks: 0
Thanked 27 Times in 24 Posts
Rep Power: 11
Omatako will become famous soon enough
I still find it astonishing that after all this time, the Americans have still not found an alternative to British Thermal Units (BTUs)

When they do, the unit will probably be equivalent to 3⅞ of a BTU.

Sorry, I have no idea how to calculate heating requirements, just being frivolous.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Share with Facebook
  #3  
Old 03-23-2009
theartfuldodger's Avatar
Senior Member
 
Join Date: Sep 2006
Posts: 278
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
theartfuldodger is on a distinguished road
Send a message via Skype™ to theartfuldodger
I would suggest that a 12,000 would be what you would need. I have a fellow sailing friend who has installed an Espar heater in a 34 Sail boat and is more than enough, he got all his spec's for requirements on the West Marine site. Myself use a Dickinson 12,000 on my 33 Morgan and is enough.
__________________
Brake Free
Lake Ontario
42 CC Passage
Reply With Quote Share with Facebook
  #4  
Old 03-23-2009
Junior Member
 
Join Date: Feb 2009
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
BBurg is on a distinguished road
Quote:
I still find it astonishing that after all this time, the Americans have still not found an alternative to British Thermal Units (BTUs)

When they do, the unit will probably be equivalent to 3⅞ of a BTU.
Ooof, Making fun of our fellow sailors are we?? How about BaaaTU's? The amount of energy required to raise the temp of a beer by one degree (F not C) whilst gently stroking your favorite KIWI lady. Yee Haw mate!!


I'm really just joshing you. I've seen many references made to our fuzzy little buddies and this picture reminded me that there are 40 sheep per person on some islands. And can someone tell me if this is a real law in Kiwiland?
Quote:
It is illegal to wander the streets at night with your face blackened, and it is lawful to take a leak in the street provided that you maintain one hand on the rump of the horse while you leak, and you aim for the ground where the horse would leak onto. (Police Offences Act 1906)

Last edited by BBurg; 03-23-2009 at 08:59 AM.
Reply With Quote Share with Facebook
  #5  
Old 03-23-2009
Junior Member
 
Join Date: Dec 2006
Location: Washington State
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
jonfreeman is on a distinguished road
Try this link: BTU Calculator - Artful Dodger's number is probably pretty close (maybe even high). I just put a 17,000 BTU Espar Hydronic unit in my Catalina 310. Fired it up the first time this weekend, and it appears MORE than enough, and I am also heating the hot water (20 gallons).
Reply With Quote Share with Facebook
  #6  
Old 03-23-2009
Junior Member
 
Join Date: Dec 2006
Location: Washington State
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
jonfreeman is on a distinguished road
BTW - My buddy has the 17,000 BTU unit in his Catalina 34. He is completely happy (because his wife is happy).
Reply With Quote Share with Facebook
  #7  
Old 03-23-2009
zAr zAr is offline
Senior Member
 
Join Date: Feb 2009
Posts: 138
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 6
zAr is on a distinguished road
Thank you everyone for your responses!

Jonfreeman, your comments got me researching the weather/temperature patterns in Nfld and I learned something new. Average winter temps are -2 C. Here in southern Ontario we're well below that at -20 C. I gotta move there, seriously.

What the heck, I thought it would be colder there. Instead I find out you guys are melting the icebergs!

Anyway, I like the BTU calculator but I do wonder if having a hull sitting in cold water alters the variables a bit. On the other hand, isn't unfrozen subsurface water usually warmer than surface air temperatures in winter? Maybe iceaters and bubblers actually affect boat temperature? So much to consider!

Seems like we need a calculator specifically for marine use, taking into consideration more varied weather regions. Until then, experience is our guide.
Reply With Quote Share with Facebook
  #8  
Old 03-24-2009
Here .. Pull this
 
Join Date: Jan 2007
Posts: 2,031
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Sailormann will become famous soon enough
My suggestion: (before you buy the boat and move on to it) would be to go down to the marinas and talk to the people who are actually living on their boats. They'll probably have a wealth of information for you on all of these subjects. I think you'll find them friendly and more than willing to help.
Reply With Quote Share with Facebook
  #9  
Old 03-24-2009
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,398
Thanks: 0
Thanked 27 Times in 24 Posts
Rep Power: 11
Omatako will become famous soon enough
Quote:
Originally Posted by BBurg View Post
Ooof, Making fun of our fellow sailors are we??
Nah not sailors, just Americans.

If I were given to continuing this line it would have to go to Off Topic and since I very rarely go there, it would be of little value.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Share with Facebook
  #10  
Old 03-24-2009
JiffyLube's Avatar
Grasshopper
 
Join Date: Jan 2008
Location: Oceanside, Ca.
Posts: 894
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
JiffyLube is on a distinguished road
Quote:
Originally Posted by Omatako View Post
I still find it astonishing that after all this time, the Americans have still not found an alternative to British Thermal Units (BTUs)

When they do, the unit will probably be equivalent to 3⅞ of a BTU.

Sorry, I have no idea how to calculate heating requirements, just being frivolous.
BTU is just a unit of measure that we are familiar with. Do use something besides BTU?
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mr. Renovation GoodOldBoat Good Old Boat 2 12-28-2009 02:56 PM
help with lifes dream kimby Boat Review and Purchase Forum 37 12-02-2009 11:32 PM
Coastal v. Bluewater cruiser, your thoughts EveningStar Sailboat Design and Construction 17 11-02-2007 06:13 PM
Two-Boat Tuning Dean Brenner Racing Articles 0 03-13-2002 07:00 PM
The New Racing Rules Dobbs Davis Racing Articles 0 04-04-2001 08:00 PM


All times are GMT -4. The time now is 01:18 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.