That's incredible. i was thinking that a license was required worldwide, as here in Italy. And getting it is far from easy, theoretical exam is very difficult, with all those lights to be recognised by night, the flags, the rules of precedence, charting, using the nautical tools, planning for fuel and weather conditions, etc...In Canada anyone who operates a motorized boat has to have a license but it's an on-line test and while thorough I doubt there is much retention in even the basic rules.
They oddly make an exception for boat rentals... any fool can rent a boat from a marina and be on their merry way with no licence and likely little instruction other than the basic operating procedures of the boat.
Even with our local permanently buoyed dive site we end up chasing boats and fishers out... even a float plane on one occasion.
then there is the practice, which is also quite challenging, as you are required to do all the standard manoeuvres, often in between obstacles.
Not talking about the license for sail boats, where you, in addition to all above, need to proof your skill regulating the sails and manoeuvring the boat in different wind and sea conditions.
The course lasts months and costs a a lot of money, and the percentage of people being rejected at the exam is significant.
I was thinking that the same was required all around the world. Really in US you can operate a boat without a license?
Here only small inflatables with an engine less than 30 kW are exempt from a license...