Section 149.691 - What means of escape are required?(a) Each deepwater port must have both primary and secondary means of escape. Each of these means must either:(1) Comply with 46 CFR 108.151 ; or(2) Be designed and installed in compliance with a national consensus standard, as that term is defined in 29 CFR 1910.2 , for use in evacuating the deepwater port.(b) A primary means of escape consists of a fixed stairway or a fixed ladder, constructed of steel.(c) A secondary means of escape consists of either:(1) A fixed stairway or a fixed ladder, constructed of steel; or(2) A marine evacuation system, a portable flexible ladder, a knotted manrope, or a similar device determined by the Sector Commander, or MSU Commander with COTP and OCMI authority to provide an equivalent or better means of escape.USCG-1998-3884, 71 FR 57651 , Sept. 29, 2006, as amended by USCG-2013-0397, 78 FR 39180 , July 1, 2013