CFR › Title 46 › Part 108 › §108.69946 CFR §108.699Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkA work vest may not be substituted for a required life preserver—(a)For the life saving equipment requirements of this part; or(b)For use during drills and emergencies.