46 CFR §78.55-1
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
It shall be the duty of the master and the engineer in charge of the boilers of any vessel to require that a steam pressure is not carried in excess of that allowed by the certificate of inspection, and to require that the safety valves, once set by the inspector, are in no way tampered with or made inoperative.