$Remembering different variations I'm glad you were able to
clarify the class rules.
Excerpt from Greg's post,
H1.3 POSITIONING
Class insignia, national letters and sail numbers shall be
positioned as follows:
(a) Except as provided in (d) and (e) below, class insignia,
national letters and sail numbers shall when possible be wholly above
an arc whose center is the head point and whose radius is 60% of the
leech length. They
shall be placed at different heights on the two sides of the sail,
those on the starboard side being uppermost.