Originally Posted by sailingdog
Glad to hear the transport went well.
If you move the bilge pickup (center bottom) to a T-fitting that is installed in the pumpout fitting line (on the right), you will be able to pump out at sea, by flipping the two Y-valves... and opening the throughhull on the very left.
Where's the water intake in this set-up? I'm plumbed into a standpipe, but otherwise what you are describing is my set up.
A second thought would be to have a manual bilge pump like a Patay connected with two pickups, one to the bilge and the other to the holding tank, with an exit to the thruhull.