Lifeline
Lifeline means a component consisting of a flexible line for connection to an anchorage at one end to hang vertically (vertical lifeline), or for connection to anchorages at both ends to stretch horizontally (horizontal lifeline), and which serves as a means for connecting other components of a personal fall arrest system to the anchorage.
Source
29 CFR § 1915.151
Scoping language
Scope and application. This subpart applies to all work in shipyard employment regardless of geographic location.