I agree with The previous post. Loose the vinal covered. The only advantage to white vinal I believe is the visibility it provides for a visual reference on a dark night to afford situational awarness of where the edge is. Stainless disapears in those conditions. I replaced my with bare 1x19 wire. It's nice to be able to see the wire itself but then again the problem almost always occurs at the terminal fitting. My lines are terminated with Norseman terminels which can be unscrewed and resealed. Lifelines always fail at the terminal where the wire goes into the terminal. I have never heard of the wire parting midway. What happens is the sealent fails, or no sealent, and then one, then two , then three wires corode inside the terminal and so on. This is especiously true of compresion terminals where no sealent is used even when even the best rotary swedge die machines are used to install them utilizing 2000lb machines. These swedges are fine for aloft but lower down near the deck
where they can be washed with salt water
spray they will fail eventually. Every one of them.