What RT said.
Another useful endeavor is to write down the make and model numbers of everything on your boat then go online and download the owner manuals and troubleshooting guides. Printing them out and placing in a binder along with your own plumbing and electrical diagrams will vault you into the top 1% of knowledgeable owners world wide.
Craig - AKA Some Clueless Idiot
The person who is saying something is impossible should not interrupt the person who is doing it.