Main tow rope

The Dextron® main tow rope is made with Dyneema® and is delivered as a plain rope or in combination with OTS Protective jacket™ and fairing. The advantage of the OTS Protective jacket™ is excellent abrasion resistance and a very durable protection against cutting.  
The high strength-to-weight ration, on the relatively small diameter ropes, enable the vessel to tow large arrangements with minimal drag. Fairing solutions reduce strumming and acustical noise, and contributes to significant fuel savings. 

OTS constantly work on developing new solutions to improve the beneficial characteristics in the main tow rope. 
Below you can find more information about our Dextron® ropes and components used in our main tow products.  




Dextron®12 Plus

Dextron®12 Plus is a torque-free, 12-strand braided rope with maximum strength-to-weight ratio and size-for-size has the same strength as steel. Dextron®12 Plus is made with Dyneema® SK78 and is an excellent wire rope replacement with extremely low stretch, superior flex fatigue and wear resistance. 

Applications 

  • Seismic Lines                      
  • Mooring lines
  • Winch lines
  • Pick-up lines
  • Tug assist lines
  • Tow lines
  • Fishing Lines
  • SPM hawsers
  • Subsea installation lines
  • Wire rope replacement
  • Pennants
  • Lifting Slings
  • Grommets
  • Messenger Lines

Special Properties

  • Stronger than steel wire on corresponding diameter
  • 8 times stronger than steel with same weight
  • Fast and easy to splice
  • Floats
  • High abrasion resistance
  • Long service life
  • Flexible and easy to handle
  • High safety – low kinetic energy (low lash back)
  • Torque free
  • Dielectric and resonance properties

 

 

Characteristics:

Material Dyneema®SK78
Colour of rope Yellow
Elastic elongation 0,44% at 10% of breaking load
0,62% at 20% of breaking load
0,79% at 30% of breaking load
Water absorption None
Abrasion resistance Very good
Fatigue resistance Excellent
UV exposure Very good
Chemical resistance Excellent
Melting range 144-152 ºC
Max work temp. 65ºC
Specific density 0,98 (floating)

 

Request techical details:
Send mail to sales@otsas.no


Dextron® Xtreme

Based on the construction of the Dextron®12 Plus rope. Made with Dyneema® XBO fiber for improved cyclic bending properties. 12-strand torque-free rope construction with with round and firm shape. Maximum strength-to-weight ratio and size-for-size has the same strength as steel. Extended service lifetime in applications with multiple bending.

Applications           

  • Seismic Lines
  • Winch lines
  • Subsea installation lines
  • Crane Rope

Special Properties

  • Match the bending performance of specialty steel wire rope 
  • Ensure best-in-class cyclic bending performance over sheaves
  • Significantly extend service life under extreme bending conditions
  • Upgrade your system from SWR to Dyneema®without compromising on bending performance  

Characteristics:

Material Dyneema®SK78 XBO
Colour of rope Yellow with black tracer
Elastic elongation 0,44% at 10% of breaking load
0,62% at 20% of breaking load
0,79% at 30% of breaking load
Water absorption None
Abrasion resistance Very good
Fatigue resistance Excellent
UV exposure Very good
Chemical resistance Excellent
Melting range 144-152 ºC
Max work temp. 65ºC
Specific density 0,98 (floating)

 

Dyneema® XBO Technology is a special coating that is only available in combination with Dyneema® fiber. Contact us for strength and dimensions.
Break load in accordance with DIN EN ISO 2307
​Manufactured by Offshore & Trawl Supply AS – Certified according to ISO 9001:2015

 

Request techical details:
Send mail to sales@otsas.no


Dextron® Super

Maximum strength without compromise. The Dextron® Super is a rope made with Dyneema® SK99 - the ultra-strong fiber. Dextron® Super is the optimal choice for operations with very high demand on modulus and breaking strength.

Characteristics

Material Dyneema® SK99
Colour of rope Yellow with gold tracer
Elastic elongation 0,44 at 10%
0,62 at 20%
0,79 at 30% of breaking load
Water absorption None
Abrasion resistance  Very good
Fatigue resistance Excellent
UV exposure Very good
Chemical resistance Excellent
Melting range 144-152 ºC
Max work temp.     65ºC
Specific density 0,98 (floating)

 

Dyneema® SK99 is the latest innovation for highest level of performance. Dyneema®SK99 has the highest tenacity (42.5 cN/dtex) and modulus (1590cN/dtex) of any lightweight polymer fiber. Result: ropes that respond with micro precision resulting in maximum speed. Contact us for strength and dimensions.
Break load in accordance with DIN EN ISO 2307
Manufactured by Offshore & Trawl Supply AS – Certified according to ISO 9001:2015

 

Request techical details:
Send mail to sales@otsas.no


OTS Protective jacket™: Patent no: 314459

The patented chafe gear - OTS Protective jacket™ - offers excellent protection against external abrasion and increases rope lifetime with up to five times. The "no-rupture" construction combined with the worlds most abrasion resistant synthetic fibers, makes this the best cut -and abrasion resistant cover for your ropes. The jacket is mechanically braided onto the rope for a firm and solid finish.

OTS Protective jacket™ is braided in the following combinations:

  • Soft eyes
  • Soft eyes and required length (for instance over the splices)
  • Exposed area on the rope
  • Entire rope length

 

OTS Protective Jacket™

  • Made with HMPE or polyester fiber.
  • The OTS Protective Jacket™ comes out as a clear winner in comparative testing of abrasion and cut resistance.
  • Excellent protection against wear and tear.
  • Patented technology

 

 

 

Advantages

  • Increases service life.
  • Can be braided onto entire rope or exposed areas.
  • Prevents rope from twisting.
  • Protects rope from external abrasion.
  • Reduced size of mooring line.
  • Reflective material can be woven into jacket band for better visibility.
  • Jacket band can be delivered in any colour.

 

 

 

Request techical details:
Send mail to sales@otsas.no


Fairing reduce the turbulence that occurs when a object is being towed through the water. The fairing OTS supply comes in two types; hairy fairing and solid fairing. 

The hairy fairing is either tied to the rope by hand or automatically braided into the protective jacket™. The hairy fairing can be made with fibers like PE-yarn, Danline, Dyneema® or Polyester. Recent years testing in laboratory and fieldtests has given further information about the effect of reducing drag by means of fairing. OTS is continously developing new fairing types based on information from these type of tests. Contact us to learn more about our recent developments. 

The solid fairing is a wing shaped component mostly made of PE or similar material. The fairing is - at its name states - a solid construction that is being threaded onto the rope and secured to the rope every 5 or 10 meters. This fairing type is especially effective on drag reduction where the rope is being towed in a transverse direction.