When you go boating, one generally spends a lot of hours out on the water. There are no stores out on the water, so you need to bring all of your necessary supplies with you out on the water.
#1 Current Registration
Before you head out on the water, you need to make sure your boat is registered and that your registration is current. Just like on the road, there is patrol units out on the water, and if they ask you for your registration, you need to make sure that you have a valid copy of it on you.