AFAIK USCG 46 § 162.028–1 references and includes NFPA 19 by Reference.
And the FE state the expiration as 10 yrs from Mfg noted on bottom of FE.
I don't see where there is any room for interpretation re: compliance
Subpart 162.028—Extinguishers,
Fire, Portable, Marine Type
SOURCE: CGFR 60–36, 25 FR 10640, Nov. 5,
1960, unless otherwise noted.
§ 162.028–1 Incorporation by reference.
(a) Certain material is incorporated
by reference into this part with the approval of the Director of the Federal
Register under 5 U.S.C. 552(a) and 1
CFR part 51. To enforce any edition
other than that specified in this section, the Coast Guard must publish a
notice of change in the FEDERAL REGISTER and the material must be available to the public. All approved material is available for inspection at the
U.S. Coast Guard, Office of Design and
Engineering Standards (CG–ENG), 2703
Martin Luther King Jr. Avenue SE.,
Stop 7509, Washington, DC 20593–7509,
and is available from the sources listed
below. It is also available for inspection at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at NARA, call 202–741–6030 or
go to
http://www.archives.gov/
federallregister/
codeloflfederallregulations/
ibrllocations.html.
(b) National Fire Protection Association (NFPA), 1 Batterymarch Park,
Quincy, MA 02169, 617–770–3000, http://
www.nfpa.org.
(1) NFPA 10, Standard for Portable
Fire Extinguishers, 2010 Edition, effective December 5, 2009, IBR approved for
§162.028–2(a).
(2) [Reserved]
(c) UL (formerly Underwriters Laboratories), 12 Laboratory Drive, P.O.
Box 13995, Research Triangle Park, NC
27709, 919–549–1400,
http://www.ul.com.
(1) UL 8, Standard for Safety for
Water Based Agent Fire Extinguishers,