SC 25CC fishbox question

[pintail71]

I recently purchased 2003 25CC. There is a large fish box forward of the CC in the floor of the boat that currently drains into the mail hull of the boat, although, it appears that, at one time, there was a drain hose attached to the hole of this box that drained somewhere else. Also, there is a switch for the "fish box drain", however, I cannot find a pump to drain this box. Can someone help educate me on how this box was designed to drain, what the switch is for, etc.? Thanks for the help in advance.