The number assigned, and no other,
shall be displayed on the bow, or forward
half, of each side of the vessel, read from
left to right, and in a position to be distinctly
visible. The letters and numbers
must be of a plain block design, at least
three (3) inches in height, and of a color
that will provide maximum contrast to
the background (light numbers on a
dark hull or vice versa).
There must be a letter size space between
letter and number groups: