Thanks @JoeC sorry I think its my terminology, there is a distinct and clear engine bay area sealed off from eveything else to catch oil drips etc. I am talking about the wider bilge area which gets some rain water in it.
Also @Tony Brooks thanks, its not going to be used as a bilge pump but wanted to try and get some use rather than throw it away. I think it should be able to suck up the little bit of water out of the bottom of the bilge area by connecting it manually with some hoses, sort of like a wet vac but temporary not permanent. It may not work in which case it will be dumped.