46 C.F.R. § 154.1852 – Air breathing equipment.

(a) The master shall ensure that a licensed officer inspects the compressed air breathing equipment at least once each month.
(b) The master shall enter in the vessel's log a record of the inspection required under paragraph (a) of this section that includes:
1. (1) The date of the inspection; and
2. (2) The condition of the equipment at the time of the inspection.