Generally, no. CNG tanks are long and heavy, like oxygen tanks, and can be installed down below because CNG is lighter than air. Propane tank boxes need to be installed higher up, usually in cockpit lockers, because the boxes need to have a hose from the bottom that leads outboard. Look in the West Marine Advisors for details.if the CNG tank location would be suitable for a propane locker.
+1 to Chris. You might want to check for local CNG refill stations before you spend money.... One by one, the places to get a CNG tank filled disappeared, until the closest was 3 hours away. I started the process of getting a second tank, but eventually gave up and just converted.
Are you joking?That's a joke, right?
I was going to do just this, with my boat, 15+ years ago. When we had kids onboard coastal sailing in season, we went through quite a bit of CNG. I can remember going through 1 tank a week during a two week cruise.Thanks for all the responses. Sounds doable, but maybe more trouble than it's worth.