Lifeline 01 : (1) in general, the lines erected around the edges of weather decks, specifically, the topmost line. From top to bottom, the lines are named lifeline, housing line, and foot rope
Compass (The National Training Portal of The U. S. Naval Sea Cadet Corps), appendix I, Glossary, VA, USA 2012. http://compass.seacadets.org/pdf/nrtc/bmr/14325_in d.pdf, (Mrtm/Nav - Amer) {558}