Mooring system for mooring a floating object

Abstract

A mooring system used for mooring a floating object, comprising a mooring line configured for extending between said object floating in water and an anchoring device, characterized by that said mooring line is made from polyoxymethylene and the ratio of static stiffness to dynamic stiffness of said mooring line is in a range of 0.8 to 1.

1 . A mooring system used for mooring a floating object,
 comprising a mooring line configured for extending between said object floating in water and an anchoring device, wherein   said mooring line is made from polyoxymethylene and the ratio of static stiffness to dynamic stiffness of said mooring line is in a range of 0.8 to 1.   
     
     
         2 . The mooring system according to  claim 1 , wherein said static stiffness and dynamic stiffness are in the range of 7 to 15 GPa. 
     
     
         3 . The mooring system according to  claim 1 , wherein said mooring line is a polymer rope made from a plurality of polymer monofilaments laid in a spiral shape. 
     
     
         4 . The mooring system according to  claim 3 , wherein said plurality of polymer monofilaments have a diameter between 0.5 mm and 5 mm. 
     
     
         5 . The mooring system according to  claim 1 , wherein said mooring line is a single braided rope consists of equal number of left and right handed strands made from multifilament fiber yarns. 
     
     
         6 . The mooring system according to  claim 1 , wherein said mooring line is a laid rope comprising strands laid in a helical manner and made from multifilament fiber yarns. 
     
     
         7 . The mooring system according to  claim 1 , wherein said mooring line has a tensile strength above 500 MPa. 
     
     
         8 . The mooring system according to  claim 1 , wherein said mooring line is a polymer rope sheathed by a jacket. 
     
     
         9 . The mooring system according to  claim 8 , wherein the polymer of said polymer jacket is selected from the group consisting of epoxy, polyamide, polyurethane, polyester (PES), polyethylene terephthalate (PET), nylon (PA), polypropylene (PP), polyethylene (PE), polypropylene-polyethylene (PP-PE) copolymer, polyethylene napthalate (PEN), high modulus polyethylene (HMPE), polyester polyacrylate (LCP), para-aramid, aramid copolymer, and any combination or blend of the above. 
     
     
         10 . The mooring system according to  claim 1 , wherein said mooring line has an elastic elongation above 10%. 
     
     
         11 . The mooring system according to  claim 1 , wherein said mooring line is a polymer rope having a diameter between 100 mm to 300 mm. 
     
     
         12 . The mooring system according to  claim 1 , wherein the polymer of said polymer rope has at least 60% crystallinity. 
     
     
         13 . The mooring system according to  claim 12 , wherein at least 50% of the crystalline polymer is orientated. 
     
     
         14 . The mooring system according to  claim 1 , wherein said floating object is a floating marine energy converter platform, an offshore wind farm, a single point mooring buoy or a floating offshore oil and gas platform.