- Registration numbers come in pairs and go on both sides of the bow of your boat. If you have "documented" your boat with the Coast Guard, registration numbers won't be necessary.
- After applying the registration numbers, put on the state registration sticker. In Massachusetts, place it aft of the numbers on the port side.
- Registration numbers are like license plates for your boat. They must be 3-in. block letters. You can get black numbers and letters from the hardware store, but they may look a little chunky, and they don't come pre-spaced.