33 CFR 5.43 : Navigation And Navigable Waters (§ 1.01-1 To Parts 404-499) — (§ 1.01-1 To Parts 121-124) — Coast Guard, Department Of Homeland Security (§ 1.01-1 To Parts 121-124) — General (§ 1.01-1 To § 27.3) — Coast Guard Auxiliary (§ 5.1 To § 5.48) — Auxiliary Markings (§ 5.40 To § 5.48) — Auxiliary mark.

(a) Description. The Auxiliary mark consists of a broad diagonal blue stripe followed (to the left or aft) by two narrow stripes - first a white stripe, and then a red stripe. The Auxiliary emblem, as described in § 5.41, is centered in the diagonal blue stripe.

(b) Display. The Auxiliary mark is used to identify personal property of the Auxiliary and on Coast Guard Auxiliary authorized publications, stationery, jewelry, and similar items.