Using Arduino Mega 2560, APM 2.6 Set, Trying to Build a Boat

I'm trying to build a small (< 2') boat that'll travel around 5MPH and I'm having trouble finding the right motor/propeller/rudder servo/battery combo. It's my first time doing something like this so I've been looking for similar projects with a parts list to no avail. I've registered here in hopes of getting some guidance.

Thanks in advance.

You will need to go to a model boat forum to get advice about the mechanics of a boat.

Your post doesn't mention any of the stuff in your title - are you just wasting our time?

...R