46 CFR § 160.171-7
Approval procedures
April 15, 2021
(a) General. An immersion suit is approved by the Coast Guard under the procedures in subpart 159.005 of this chapter.
(b) Approval testing. Each approval test must be conducted in accordance with §160.171-17 or §160.171-19.
(c) Approval of child size and oversize adult suits. No child size or oversize adult sized suit will be approved unless the adult size of the suit has been approved.