need to know more about CNG - SailNet Community
LinkBack Thread Tools
post #1 of 3 Old 05-30-2004 Thread Starter
Join Date: Jun 2003
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
need to know more about CNG

We are considering a Sabre 34-I as our next boat. This is a step up in size and quality for us. The boat we may make an offer on has a CNG stove & oven. I (we) are not familiar with this cooking fuel as used on a boat - what to expect in cooking, availability, safety, what a proper installation should look like, etc.
winslow59 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 3 Old 05-30-2004
Join Date: Jan 2004
Posts: 62
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
need to know more about CNG

We had a boat 20+ years ago with CNG, since then our boats have had propane. There is theoretically a little different heat value from the two fuels but in practice they seem to cook about the same, like a gas stove at home. The advantage of CNG is it''s lighter than air, so gas from a leak drifts up and out the normal ventilation openings. Propane is heavier than air so a leak pools low in the bilge and poses an explosion hazard. We have come to believe that a proper propane installation (which includes a sensor under the stove with an alarm among other things) is adequately safe. The big negatives of CNG are storage and availability. CNG cannot be compressed into a liquid so it''s stored under high pressure in cylinders much like scuba tanks. An equivalent amount of fuel takes much more space than propane. You exchange the empty cylinder for a full one and availability is a real issue. Check to see where you can do this around your normal cruising area, my sense is it''s getting harder to find. If you go far afield, it can be trouble.

If CNG availability turns out to be a problem, many stoves (check with the manufacturer) can be re-jetted to burn propane. Often CNG installations have the tanks in a lazarette in the open, counting on the lighter-than-air for safety. To convert to propane you need a proper vapor tight locker, vented overboard. These can be bought as aftermarket kits and installed where the CNG tanks went.

I wouldn''t let the CNG issue deter you from the Sabre 34. If all else fails convert to propane.
jkumin is offline  
Quote Quick Reply Share with Facebook
post #3 of 3 Old 05-31-2004
Senior Member
DelmarRey's Avatar
Join Date: Aug 2001
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 16
need to know more about CNG

Actually CNG can be compressed to a liquid @ 165º below 0. But to bring it back it has to go threw a pump. Which is only convenient in large quanities.
CNG is becoming more available everywhere, you just need to look. With the prices of gasoline the way they''re going CNG is becoming very popular real fast. We''ll be setting up another station for the public right next to our City unit. We already have a taxi company buying from us. We have around 100 cars and trucks running on CNG now.
CNG is much safer than propane, just not as available, but soon that will change.
We have one large station downtown and we''re setting up another in the North county besides the one for the public.
I''ve cosidered converting my vessel to CNG but I think I''ll be going electric instead.


DelmarRey is offline  
Quote Quick Reply Share with Facebook

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome