Silver is a synthetic fiber comprising a blend of Danline and Polyester. Polyester is a sinking fiber with density of 1.38 and adds extra tensile strength. Danline is a buoant fiber with density 0.91 that contributes additional abrasion resistance compared with pure Polyester, The combination of the two gives a slightly negatively buoyant rope offering the best of both worlds in terms of tensile strenght and abrasion resistance.
Silver provides far better performance for a number of applications than either of its two components on their own. We use Silver especially in our longline rope and end ropes (downlines to which surface buoys and anchors are attached). Silver has a specific weight of 1,1 and, unlike Danline, will sink in water, and as an endrope in deep water it is easier to haul back than a heavier Polyester rope. It absorbs very little water, does not decay, and withstands most acids and alkalis.