(a) A work vest or deck suit meeting the requirements of Sec. 149.326 of this part may be used instead of a lifejacket when personnel are working near or over water.
(b) Work vests or deck suits may not be substituted for any portion of the number of approved lifejackets required on the deepwater port or attending vessel for use during drills and emergencies. [USCG-1998-3884, 71 FR 57651, Sept. 29, 2006, as amended by USCG-2013-0397, 78 FR 39179, July 1, 2013]