The Coast Guard commission pennant shall have the union part composed of thirteen blue stars in a horizontal line on a white field, one-fourth the length of the pennant; the remaining three-fourths shall consist of sixteen vertical stripes of equal width, alternate red and white, beginning with the red, and a tail piece of red about one-fifth the entire length of the pennant, ending in a swallow tail.
33 C.F.R. §23.20