BLA Rope - Silver Silver rope (polyethylene staple) is the most popular general purpose rope. 4mm to 12mm is soft medium lay for ease of splicing. 14mm and larger is a medium lay to suit anchor capstan winches while still being spliceable. Ends can be heat sealed to prevent unravelling, U.V. stabilised, resistant to grease and oil. High abrasion resistance, non-absorbent with good grip for handling. Silver rope is a floating line.