In Australia, we have to display the registration number on both sides of the hull,
Minimum lettering size of I think about 6 inches. No regulations on the font as
long as its clear enough to read.
We have 3 letters followed by 3 numbers then followed by the letter of the
state the boat is registered in. eg. "N" for New South Wales "Q" for Queensland,
"V" for Victoria etc, You can however order special personal registration numbers
no more than a mix of 6 letters/numbers and of course last digit must be
"N", "V" "Q" etc. (I should order 2daMaxN)