FLIP Fluids Addon: A liquid fluid simulation tool for Blender

Hi, I have a hopefully small question, how would one go about setting up a body of water exactly as in this video, essentially I want to set up a fixed boat and have an ocean/river flowing across the domain so it looks like the boat is moving but the camera is fixed with the boat? im fairly new to blender as using it side by side other apps. https://www.youtube.com/watch?v=5fmOFCWCOUY