29 CFR 1910.427 - Liveboating.
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(a) General. Employers engaged in diving operations involving liveboating shall comply with the following requirements.
(2) Using surface-supplied air at depths deeper than 190 fsw, except that dives with bottom times of 30 minutes or less may be conducted to depths of 220 fsw;
(2) A device shall be used which minimizes the possibility of entanglement of the diver's hose in the propeller of the vessel.
(3) Two-way voice communication between the designated person-in-charge and the person controlling the vessel shall be available while the diver is in the water.
Title 29 published on 2014-07-01
no entries appear in the Federal Register after this date.