Alabama Boat Number Registration Decals
Alabama Boat Number Laws 
NUMBERING YOUR VESSEL
Your permanent registration number appears on the right- hand side of the certificate preceded by the letters AL. The number contains 1 to 4 digits plus the 2-letter suffix following the number. This number remains with the boat regardless of change of ownership within the state.
The registration number must be placed on each side of the bow of the vessel for which it was purchased, in such a position as will make it clearly visible at all times. The number must be displayed in three parts with a hyphen or space separating each part, i.e.: AL-1234-AA, and be of a color that contrasts with the background of the boat — dark on light or light on dark. Numbers shall be BLOCK characters, not less that 76 mm (3 inches) in height, excluding borders and must be of good proportion. Characters of varying thickness, slanted characters, and scroll-type characters are not acceptable. No number other than the number issued shall be displayed on either side of the bow. The validation decal must be affixed within 152 mm (6 inches) before or after and in line with the registration number on port and starboard bow.
