On Wed, 9 Apr 2008 20:24:20 +0200, in message

"Edgar" wrote:

I will stick with steel which does not burn and has a high melting point.
So what if it rusts a bit? I'll get a new one in exchange when it becomes
empty.
And what kind of boat owner cares if his propane tank weights half of a
steel one?
I have 4 tons of lead in my keel so lightening a propane tank, even though
it is above the waterline, is a low priority for me.

The lead in your keel is helping the performance of your boat and is
centrally located. The extra mass in your (likely far aft) propane
locker is just adding to your pitching moment and slowing you down,
although probably not in quantities that matter for cruising.

As for who cares, absent the boat performance issues.... Anybody who
ever has to lift it, especially in awkward circumstances.

Ryk