More CNG Questions

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Bill Jones

I'm closing on a 1994 h40.5 and it has CNG. I understand the issues concerning safety, availability, of CNG versus propane. The boat I'm getting has two CNG tanks in the aft starboard lazarette. How long can you count on the tanks lasting if both are full? Normal cruising use, probably very little oven use.
 
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Bob

CNG

We liveaboard our Legend 37. We use our stove nearly everyday to cook dinner. Our tank lasts from 3 to 4 months. Hope this helps. Bob
 
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Les

CNG Duration

Bill, We have a 37.5 with one large CNG bottle on the port side. We can last just about an entire season if we start out full. We do use the oven and burners alot during the weekends but not to Bob's extent. With two tanks, assuming they are the same size as mine, you should have no problem lasting the season. Also, you can use one while the other is out for refilling. Other than the issue of finding the stuff, CNG is really nice and seems to give a hotter flame than propane. Good luck with your new boat, Les s/v Mutual Fun
 
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John

Use Hot Plate

When we connect to shore power to run the electric heater and water heater we often use a hot plate, especially for things like boiling water for coffee, etc. This saves some BTUs and stretch the life of a tank.
 
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Paul Akers

All summer season

During our New England season, we use nearly a cylinder. We do use our grill a lot, also so this takes some load off of the CNG. We keep a spare cylinder aboard so we won't have to worry about running out. Expect to pay about $200 to buy a spare tank. We are never without two because all you do is exchange an empty for another full one. All tanks usually belong to a large pool of tanks, so you won't necessarily get the same one back when you do an exchange. The place that I go to charges $16 for a full one (a gases company), although I've seen some marinas that charge $25-$30 for an exchange.
 
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Bill Sheehy

Look for used

I have 3 tanks on our boat. I have gotten 2 used ones as the first time you take the new one in they give you some old used one back.
 
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Dan Arsenault

CNG Tank

Bill, I converted to propane our first season as CNG is not readily available here in the Great Lakes. That is one aspect you'll want to check into. If interested I have the tank I removed from our boat and I'll sell it just to get it out of my way if you want a spare. I've got it posted on the gear for sale page. Good Luck with the 40.5, it's a nice boat. Dan
 
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Dave Brengelmann

Used for less than 100!

We got a second CNG bottle just before a two week cruise on our 35.5 and stored it in our deck locker. Naturally, you always run out when you're in the middle of cooking dinner swinging on the hook in some remote anchorage. We picked up a used tank at a marine consignment store for $85.00. When we used it as a core to trade, we got a shiny new tank in return! Don't waste your money on a new one!
 
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Patrick Magers

CNG DURATION

I just traded in my 1994 40.5 which was equiped with CNG. A full container should register approximately 2200 lbs of pressure which equates out to about 22 hours of continual use with one burner. This was according the a CNG provider I contacted several years ago and was consistent with my experience over 5 years of use. To save on gas, I used an electric coffee pot and the microwave oven while in the slip.
 
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