MIL-L-221 Revision C, May 21, 1957
Includes all amendments and changes through Cancellation Notice 1, November 15, 1985
Additional Comments: CNCL NO S/S * BEST COPY AVAILABLE
This specification covers flexible embarkation and debarkation ladders.
Jacob's ladders shall be of the following types, as specified (see 6.1).
Type I — Single chain, with steel rungs and spacer disks. Type III — Multiple chain, with wood rungs and spacers.