Introduction

Mooring Materials Application Program Links
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Synthetics Steel  

Aramid

Kevlar

 

Polyamide is the chemical name for what is mostly known as nylon. Nylon has been widely used in marine mooring and towing lines since the 1950s.

 

Polyamide has the lowest stiffness modulus of all synthetics, and thus it is favored where high extension is very important.

 

Polyamide is the strongest of the common fibers when dry. However, wet polyamide fiber loses about 10% of its strength, and wet polyamide ropes can lose up to 20% of their strength. Wet polyamide ropes also suffer strength loss due to creep and internal abrasion during tension cyclic loading (Flory, 1982).

 

The resulting short service life of large nylon ropes generally makes them unsuitable for permanent deep water moorings

Polyamide

Nylon

Polyethylene

Dyneema

Polyester

 

Polypropylene

 

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