Inverted flight

In regards to catamaran watertanks,  I thought it wise to incorporate a "flop" pickup tube inside the two water tanks so that in the unlikely event of an inversion incident, any remaining fresh water in the tanks could be accessed via exposed plumbing....... otherwise, that water may as well be on the moon.

Here is a photo of the under side of one of  the tops of the built in water tanks with a flexible pick up line and a weighted end.

the unlikely event: