[A/S] draining the freshwater tank

["redhen10" <redhen10@xxxxxxxxx>]

Hello, I am about to embark on 6 weeks of fall camping in our new (to 
us) 1979 25' International.  We will be at a site with city water, 
which is a good thing because the water pump needs replacing--it is 
not working at all.  I have a couple questions:

With the pump not functioning, I assume the only way to drain the 
freshwater tank is to remove the plug underneath, right?

I have removed the little sheet metal "access door" that hides the 
plug.  I can feel the plug in the plastic tank, but it is partially 
hidden by the edge of the sheet metal box that the tank is in.  How 
can I get to the plug?

What kind of tool is required to remove the plug?  It feels like a 
hexagonal recess maybe .75 inches across.  Is there a special tool 
for this?

Thanks,
Phyllis in Alabama