Number on Hull
The number you are referring to is the state registration number. It is probably the registration number of the previous owner which would have been from Connecticut. You must be very new to boating if you do not know what this is. Most likely you will register the boat in your state if you plan to use it with a motor on it and you will be assigned numbers. You will remove the old numbers and place your new ones on the hull in the proper manner as required by state law. Look at many boats and you will see these state registration numbers. If a boat is documented, USCG, you do not need stste registration numbers.Good luck with your new boat.