additional potable water tank location - 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 > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 08-06-2012
Junior Member
 
Join Date: Mar 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
izzy1554 is on a distinguished road
additional potable water tank location

im looking for space for a water tank in my coronado 34. i think 50 gallons would be great for cruising in mexico. the space i found is the water heater compartment behind the engine compartment. 50 gallons is about 400 lbs.

is 400lbs added next to the rudder post too much weight?
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 08-06-2012
Senior Member
 
Join Date: Feb 2007
Location: New Jersey
Posts: 1,996
Thanks: 4
Thanked 50 Times in 49 Posts
Rep Power: 8
Tempest is on a distinguished road
Re: additional potable water tank location

I wouldn't think so on a 34 ft. well built 5 ton sailboat.

2 of my friends would equal that.

I suppose though, that if you're cruising with all the other related added weight that, that brings with it, you might want to check how she sits on her lines after you load it up. Shifting some of the other weight/gear around to keep a nice balance.
__________________
Tempest
Sabre 34
Morgan, NJ

Last edited by Tempest; 08-06-2012 at 03:43 PM.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 08-06-2012
tdw's Avatar
tdw tdw is offline
Super Fuzzy Moderator
 
Join Date: Oct 2006
Location: Sydney Australia
Posts: 14,577
Thanks: 5
Thanked 73 Times in 68 Posts
Rep Power: 10
tdw is a jewel in the rough tdw is a jewel in the rough tdw is a jewel in the rough
Re: additional potable water tank location

I doubt the extra weight will trouble the boat overall but you'll certainly need to compensate with some weight up forward if you want to keep her on her lines.
__________________
Andrew B

"Do you think God gets stoned? I think so... Look at the platypus." Robin Williams.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 08-06-2012
Junior Member
 
Join Date: Mar 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
izzy1554 is on a distinguished road
Re: additional potable water tank location

great, cuz my boat could use 50 gallons of clean potable water!

i was thinking it would start hobbie horsing.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 08-07-2012
Banned
 
Join Date: Apr 2011
Location: Southern California
Posts: 649
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
WDS123 is on a distinguished road
Re: additional potable water tank location

Time to start doing a bit of math - no need to go extreme, but you should at least do a rudimentary weight and balance to get a feel for your loading.

I wouldn't get obsessed about sailing on her lines, but you should at least have an idea of how you are changing her floatation.

We once put 400 lbs in a 9,000 lbs boat a 'bit aft' of what we guessed was center of floatation - it lowered the stern by 2" and raised the bow by a lot, boat appeared to be popping a wheelie. Why - Center of floatation was significantly foreward of our guess.
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 08-07-2012
MedSailor's Avatar
Closet Powerboater
 
Join Date: Mar 2008
Location: Anacortes PNW
Posts: 2,721
Thanks: 115
Thanked 59 Times in 51 Posts
Rep Power: 7
MedSailor is on a distinguished road
Re: additional potable water tank location

Quote:
Originally Posted by tdw View Post
I doubt the extra weight will trouble the boat overall but you'll certainly need to compensate with some weight up forward if you want to keep her on her lines.
50 gallon rum tank forward of the rudder. Done!



MedSailor
__________________

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


I have a sauna on my boat, therefore I win.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 08-07-2012
tdw's Avatar
tdw tdw is offline
Super Fuzzy Moderator
 
Join Date: Oct 2006
Location: Sydney Australia
Posts: 14,577
Thanks: 5
Thanked 73 Times in 68 Posts
Rep Power: 10
tdw is a jewel in the rough tdw is a jewel in the rough tdw is a jewel in the rough
Re: additional potable water tank location

Quote:
Originally Posted by WDS123 View Post
Time to start doing a bit of math - no need to go extreme, but you should at least do a rudimentary weight and balance to get a feel for your loading.

I wouldn't get obsessed about sailing on her lines, but you should at least have an idea of how you are changing her floatation.

We once put 400 lbs in a 9,000 lbs boat a 'bit aft' of what we guessed was center of floatation - it lowered the stern by 2" and raised the bow by a lot, boat appeared to be popping a wheelie. Why - Center of floatation was significantly foreward of our guess.
Clarification .... my use of "lines" was probably not strictly correct. I was really talking about balance fore and aft, so yes flotation is probably a better term to use.

I don't think hobby horsing is likely to be a major issue but as WDS says, get that weight distribution wrong and you will have her down in the stern which apart from any performance issues simply looks bad.

Andrew B

(Reality is most cruising boats of small to moderate size will inevitably be down on their lines.)
__________________
Andrew B

"Do you think God gets stoned? I think so... Look at the platypus." Robin Williams.

Last edited by tdw; 08-07-2012 at 07:44 PM.
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 08-08-2012
Junior Member
 
Join Date: Mar 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
izzy1554 is on a distinguished road
Re: additional potable water tank location

ah yes looks. i'm planning on replacing my anchor rode from rope to chain. hopefully 300-375' of chain will add some weight forward...

now with my new measurements i'm not as confident that i will be able to squeeze that 50 gallon tank i was hoping for... back to the drawing board.

50 gallons would be nice
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 08-08-2012
tdw's Avatar
tdw tdw is offline
Super Fuzzy Moderator
 
Join Date: Oct 2006
Location: Sydney Australia
Posts: 14,577
Thanks: 5
Thanked 73 Times in 68 Posts
Rep Power: 10
tdw is a jewel in the rough tdw is a jewel in the rough tdw is a jewel in the rough
Re: additional potable water tank location

Quote:
Originally Posted by izzy1554 View Post
ah yes looks. i'm planning on replacing my anchor rode from rope to chain. hopefully 300-375' of chain will add some weight forward...

now with my new measurements i'm not as confident that i will be able to squeeze that 50 gallon tank i was hoping for... back to the drawing board.

50 gallons would be nice
new measurements ?
__________________
Andrew B

"Do you think God gets stoned? I think so... Look at the platypus." Robin Williams.
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 08-08-2012
Senior Member
 
Join Date: Feb 2011
Location: San Francisco Bay area
Posts: 2,254
Thanks: 2
Thanked 38 Times in 38 Posts
Rep Power: 4
MarkSF is on a distinguished road
Re: additional potable water tank location

I do think 400 lbs right over the rudder stock will have a major effect on fore/aft balance. When the PO added two extra batteries to the lazarettes, that raised the bow about 2 inches. Now if I don't keep the bow water tank full, the boat looks too high at the bow.

Also you want to pay attention to placing the water tank as low as possible so as not to raise the boat's centre of mass too much, effecting the righting moment. In a knockdown, it could make a real difference to recovery.

Where are the existing water tanks?

How about adding qty 10 of 5 gallon jerry cans? They can be placed around the boat, nice and low, and placed so as to not upset balance (or even to improve it).
__________________
1984 Bristol 31.1
Alameda, California, USA
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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
Fresh water tank vent location options josrulz Gear & Maintenance 27 07-10-2014 04:37 PM
additional potable water tank location izzy1554 Columbia & Coronado 1 06-27-2013 12:26 PM
Potable Water tdw Provisioning 31 08-11-2007 07:30 AM
potable water tank paint bailing Gear & Maintenance 2 07-21-2007 09:20 AM
Potable Water felipe777 General Discussion (sailing related) 1 11-28-2000 05:51 AM


All times are GMT -4. The time now is 07:16 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.