Bilge pump pipes

Hi all,

I now have another issue to sort out on Dragonfly. Last year quite a lot of water managed to get down below after a beat across the channel. When I went to pump it out there was a lot of sucking going on, but very little water was being shifted. It turns out that the pipe attached to the pump in the saloon has chafed through on the hull, leaving a 5cm hole in the pipe. I therefore now need to replace the pipes!

First has anyone come across this before? and second, does anyone have a diagram showing where the pipes are routed, and any hints on how to go about re-piping the boat?

Ive lifted the floor boards and found that the pipes in the saloon floor dive into a hidden cavity, so that is the puzzle at the moment.

Pete