Section 117.71 - Life jackets(a) An adult life jacket must be provided for each person carried on board a vessel.(b) In addition, a number of child-size life jackets equal to at least 10% of the number of persons permitted on board must be provided, or such greater number as necessary to provide a life jacket for each person being carried that is smaller than the lower size limit of the adult life jackets provided to meet this section, except that: (1) Child-size life jackets are not required if the vessel's Certificate of Inspection is endorsed for the carriage of adults only, or(2) When all "extended size" life preservers (those with a lower size limit for persons of 1,195 millimeters (47 inches) in height or weighing 20.4 kilograms (45 pounds)) are carried on board, a minimum of only 5% additional child size devices need be carried.(c) Except as allowed by paragraph (d) of this section, each life jacket must be approved in accordance with either §§ 160.002 , 160.005 , or 160.055 in subchapter Q of this chapter, or other standard specified by the Commandant, including, but not limited to, approval series 160.155 or 160.176.(d) Cork and balsa wood life jackets previously approved in accordance with § 106.003 or § 160.004 in subchapter Q of this chapter may not be used to meet the requirements of this section.(e) Each life jacket carried on board the vessel must be marked in accordance with § 122.604 of this chapter.CGD 85-080, 61 FR 911, Jan. 10, 1996, as amended by CGD 97-057, 62 FR 51047, Sept. 30, 1997; CGD 85-080, 62 FR 51350, Sept. 30, 1997; USCG-2015-0867, 80 FR 62469 , Oct. 16, 2015; USCG-2023-0759, 89 FR 22949 , Apr. 3, 2024 USCG-2023-0759, 89 FR 22949 , 4/3/2024