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33 U.S.C. 1509; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703, 6101; Department of Homeland Security Delegation No. 0170.1.
CGD 76-009, 43 FR 53683, Nov. 16, 1978, unless otherwise noted.
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The diving supervisor shall insure that—
(a) Each depth gage and timekeeping device is tested or calibrated against a master reference gage or time-keeping device every 6 months;
(b) A depth gage is tested when a discrepancy exists in a depth gage reading greater than 2 percent of full scale between any two gages of similar range and calibration;
(c) A timekeeping device is tested when a discrepancy exists in a timekeeping device reading greater than one-quarter of a minute in a 4-hour period between any two timekeeping devices; and
(d) Each depth gage and timekeeping device is inspected before diving operations are begun.