§ 175.125 § 175.125 Serviceability. No person may use a boat unless each signal required by § 175.110 is in serviceable condition and the service life of the signal, if indicated by a date marked on the signal, has not expired. [CGD 93-055, 61 FR 13926, Mar. 28, 1996, as amended by USCG-1999-5832, 64 FR 34715, June 29, 1999]
33 CFR §175.125
33 CFR Part 175
TL;DR
No person may use a boat unless each signal required by § 175.110 is in serviceable condition and the service life of the signal, if indicated by a date marked on the signal, has not expired.