Drill some weep holes in the base of the mast and let it drain into the bilge
then. It sounds like the PO didn't want bilge water
, so he rigged the hose. If the container is the big issue, get rid of it and replace it with a blivet until you know what is going on.
Here in the states, most diners use a "milk machine" which takes 5 gallon or larger clear plastic blivets of milk, and they throw them away once empty. They'll be happy go give you one, free usually, if you have lunch there when you ask.