Are you stuck on the Godot loading screen? You may just need to wait, it almost seems like it froze up but it will eventually start.
If you're on the screen with the plane floating in the water, a mouse click or "w" should start things.
Firstly. I’m so impressed that you responded to my random and frankly rude question, so thank you. I’ll try your suggestion tonight. I have a very excited person who is desperate to play with a plane that looks like the Sea Duck. I’m forever in your debt.
Secondly this looks incredible. It’s so charming! Way to go to everyone who worked on it. You should all be proud of yourselves.