46 CFR § 108.697
Buoyant work vests
April 15, 2021
(a) Each buoyant work vest on a unit must be approved under Subpart 160.053 or Subpart 160.077 of this chapter.
(b) Commercial hybrid PFD's carried as work vests must be—
(1) Used, stowed, and maintained in accordance with the procedures set out in the manual required for these devices by §160.077-29 of this chapter and any limitation(s) market on them; and
(2) Of the same or similar design and have the same method of operation as each other hybrid PFD carried on board.
[CGD 78-174A, 51 FR 4351, Feb. 4, 1986]