System Design iOS Application

Danyd19,
First for clarification: I have no experience in ship building or design so my thoughts may be tainted.
-
Question: Why do you want to use work done by someone else which may or may not match your Clients system requirements?
-
I would think that any pre drawn equipment and piping you might find on the internet would be no better than "Cartoons".
- The Pumps and Motors would not be the size and type required by your project
- The Heat Exchangers would not be the size and type required by your project
- The Tanks would not be the size and type required by your project
- The configuration of the piping would not be consistent with your project requirements
- The valves may not be the type required by your job specifications
- The valves would more than likely not be located where you need them to be located

Every thing I can think of about this leads me to believe that you would end up scrapping every thing and redoing it. A complete waste of time. You may not be able to edit the Cartoon once you get it.

So, Why?