If indeed it is a 47 gallon tank then there are a couple of possibilities.
1. The vent is located below the top of the tank
2. The fill is located below the top of the tank
3. The boat is setting at such an angle that either the fill or vent is
below the highest point on the tank.

If this is not it, then the tank either has something inside it or is not a
47 gal tank.

--
Tony
My boats and autos - http://t.thomas.home.mchsi.com



"alpine cooling" wrote in message
news:Ln4kb.579847$Oz4.558954@rwcrnsc54...
Does any one on here own one of these boats. I cant seem to fill my 47 gal
tank over 30 gal. The dealer has informed me that Glastron knows about the
problem but has no fix. I find this ridiculous but has anyone else heard
of
this or has this problem?

--
Brett
"Id rather be in the boat with a drink on the rocks
THAN
in the drink with a boat on the rocks"