
22 Nov 2007
FIRST VLCC VESSEL TO USE MOORING ROPES MADE WITH ULTRA-STRONG DYNEEMA® FIBER
Successful Sea Trial by COSCO Dalian Resulted in Shorter Mooring Times and Improved Crew Safety Compared to Traditional Steel Wire Rope
URMOND (NL), 22 November 2007 - DSM Dyneema, maker of ultra-strong, lightweight Dyneema® polyethylene fiber, today announced that COSCO Dalian, a subsidiary of China Ocean Shipping (Group) Company, has selected mooring lines made with Dyneema® fiber for its newest Very Large Crude Carrier (VLCC), the Cospearl Lake. Following a successful eight-month sea trial on its Cosmerry Lake VLCC, COSCO Dalian found that, in comparison with steel wire mooring lines, ropes made with Dyneema® enabled a reduction in mooring time and significantly improved crew safety. DSM Dyneema worked closely with COSCO Dalian during the sea trial to document performance of the new ropes.
With a steady increase in the length and capacity of oil and LNG carriers and the trend toward mooring in more exposed conditions, greater loads are placed on mooring lines. However, when steel wire lines are made stronger, they become too large and heavy to handle. Dyneema® fiber is exceptionally strong for its weight; a mooring line made with Dyneema® that is as strong as steel wire will have the same diameter but weighs only one-eighth as much. Therefore, ropes made with Dyneema® can be handled more easily. For example, instead of being restricted to deploying one steel wire line at a time, a mooring boat can carry two ropes made with Dyneema®, significantly reducing mooring time. On top of that, less weight can help avoid crew injury. Finally, because Dyneema® fiber provides a low elongation of less than 2.5 percent at break, there is minimal backlash in case of failure.
Zhao Jinwen, General Manager of Technical Department COSCO Dalian, said, “At COSCO we are always looking for new ways to improve the safety and efficiency of our operations, and this is why we trialed the lines made with Dyneema®. We were very impressed with the results. The mooring ropes are lighter and easier for seamen to handle, which helps avoid injury at sea and ashore, and speeds up the mooring process. We dramatically reduced mooring time, which will help lower port fees and allow faster turnarounds for our vessels. We are looking forward to the launch of the Cospearl Lake and the many benefits Dyneema® technology will bring to its operation.”
The new ship is equipped with a full set of 22 ropes, each 280 meters long and with a required breaking strength of 1300kN.
Edwin Grootendorst, Marketing Manager Heavy Marine for DSM Dyneema, said, “The ease of handling and stowing of lightweight mooring ropes made with Dyneema® provides so many advantages that many shipping companies are moving away from steel wire. We have been very successful in certain areas already - more than 75 percent of new-construction LNG tankers scheduled for delivery in the next few years will be equipped with mooring lines made with Dyneema®, and we clearly see increased interest for VLCC and bulk carriers. As a global leader in shipping, COSCO is also taking the lead in adopting a better and safer technology for mooring its ships.”
Reader enquiries
Dyneema
Urmonderbaan 22
6167 RD Geleen
Netherlands
Notes for editors
About DSM Dyneema
DSM Dyneema is the inventor and manufacturer of Dyneema®, the world’s strongest fiber™. Dyneema® is an ultra strong polyethylene fiber that offers maximum strength combined with minimum weight. It is up to 15 times stronger than quality steel and up to 40% stronger than aramid fibers, both on weight for weight basis. Dyneema® floats on water and is extremely durable and resistant to moisture, UV light and chemicals. The applications are therefore more or less unlimited. Dyneema® is an important component in ropes, cables and nets in the fishing, shipping and offshore industries. Dyneema® is also used in safety gloves for the metalworking industry and in fine yarns for applications in sporting goods and the medical sector. In addition, Dyneema® is also used in bullet resistant armor and clothing for police and military personnel.
Dyneema® is produced in Heerlen (The Netherlands) and in Greenville, North Carolina (U.S.A.). DSM Dyneema is also a partner in a high modulus polyethylene (HMPE) manufacturing joint venture in Japan. Further information on DSM Dyneema is available at www.dyneema.com and www.fasterropes.com.
About DSM
DSM creates innovative products and services in life sciences and materials sciences, contributing to the quality of life. DSM's products and services are used globally in a wide range of markets and applications, supporting a healthier, more sustainable and enjoyable way of living. End markets include human and animal nutrition and health, personal care, pharmaceuticals, automotive, coatings and paint, electrics & electronics, life protection and housing. The company strategy, Vision 2010 - Building on Strengths, focuses on accelerating profitable and innovative growth of the company's specialties portfolio. The key drivers of this strategy are market-driven growth and innovation, an increased presence in emerging economies and operational excellence. DSM has annual sales of almost €9 billion and employs some 22,000 people worldwide. The company is headquartered in the Netherlands, with locations in Europe, Asia, the Americas, Africa and Australia. More information on DSM can be found at www.dsm.com.
Dyneema® and Dyneema®, the world's strongest fiber™ are trademark(s) (applications) owned by Royal DSM N.V.
All other trademarks are the property of their respective owners.
Related images

"The Cosmerry Lake VLCC which completed a successful 8 month sea trial using mooring lines with Dyneema®"
Also available in