In recent years, with the rapid development of Marine economy, the market of Marine textile, especially the application of Marine drilling cable and Marine fishery, makes the market prospect of Marine high-strength polyester industrial yarn more and more broad. Marine yarn has high corrosion resistance. It is mainly used in marine ropes. Ordinary high-strength polyester industrial yarns are easy to age and have short service life due to the influence of light, salt and bacteria in seawater environment.  Marine yarn has high strength, low elongation, good wear resistance, stable size, excellent performance, but also has low water absorption, light resistance, water resistance and antibacterial properties.