Join Date: Feb 2012
Location: New Orleans Louisiana
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Re: Through Hulls - Open or Closed?
I know where they all are, and check them every few months, but honestly I have never closed them regularly. If I was that worried about them failing I would replace them.
Is it safer to close them? Possibly a little, but the skin fitting failures I have seen in the past are not in the ball or after it, but when the pipe broke free from the flange (four of these failures so far). If I was leaving the boat unattended for months I would close them, but our boat is used at least once a week, normally more, and I can't see the point.
In the same vein, it is actually safer to turn off the breaker on your house every time you leave it, turn off the mains water, and shut off the glass valve too. But anyone who did this for their house would be thought of as completely mad. Why it's different on a boat I have no idea.