I was just looking threw the safety requirements and came across section 3.7 AIS. All boats shall have an AIS Transponder. Maybe I'm miss understanding or they are using the term wrong but I though transponders were only for larger boats, and were rather expensive. Did they mean receiver so you can see incoming traffic or did they really mean transponder so other can see you. The effective date is 2024 so maybe some newer devices will be on the market by then.

Also does GPS count as a knot meter?