4-strand GG polyethylene (PE) rope in dark green, also called grey green, with a red tracer so it is easier to see.
PE rope is hard-wearing, floats, and keeps the same strength wet or dry. It is a little heavier than polypropylene (PP) rope but stands up better to rubbing, so it is widely used in industry.
1.5mm to 48mm · 4-strand.