Serving the Marine Industry since 1936

SK78 Prisma-Siri® S-12 DB Rope

SK78 Prisma-Siri® S-12 DB are unique High-Performance ropes with excellent properties that meet the requirements of the most demanding applications. They consist of a 12strand SK78 Prisma® Shielded load bearing core and a protective braided jacket. This rope construction is firm, round and torque free.

APPLICATIONS: MOORING / TOW LINES / STS OPERATIONS (to be used with synthetic tails) / ANCHORING / OFFSHORE / YACHTING

There are three options for the jacket:

a. 100% Polyester jacket: A reliable protective jacket that offers very good abrasion resistance and gripping properties when used on winches, capstans and other types of hardware.

b. Mixed jacket (UHMWPE/PES): A special blend of UHMWPE and polyester fibers form a highly abrasion protective jacket, that combines the gripping efficiency of Polyester and the ultra-high abrasion resistance of UHMWPE fibers.

c. UHMWPE jacket: A High Modulus jacket that provides maximum abrasion resistance prolonging significantly the rope’s service life.

These special jackets provide extra protection against abrasion, UV sunlight and environmental degradation. The jackets are repairable with the use of repair kit.

The special Prisma® Shield technology and the elaborate in-house heat-setting process upgrade the SK78 fiber to a level of superior performance. The application of Prisma® coating is performed on the fiber level and protects the SK78 fibers from abrasion and UV radiation. In the end, the whole process guarantees a top-quality rope with extra high strength efficiency and excellent abrasion resistance.

When compared to wire ropes, SK78 Prisma-Siri® S-12 ropes are stronger (for the same weight), lighter (making it easy and fast to handle), safer to use and cost-saving (minimum maintenance needs, no greases, faster operating times).

SK78 Prisma-Siri® S-12 DB ropes are an excellent wire-rope alternative and some of the reasons are the following:

  1. Most cost-effective ropes to purchase due to lower labor requirements in operations and decreased mooring & towing operating times
  2. Safer and easier to use due to their high strength and low weight.
  3. 2-3 times longer service life
  4. Negligible maintenance costs

SK78 Prisma-Siri® S-12 DB ropes are produced according to ISO 10325-2009 and they comply with OCIMF’s latest regulations & recommendations for the safe mooring of the tanker-LNG-LPG vessels.

Siri High Performance Ropes
NikaLube
NikaThane
LR Type Approval

Technical Specifications

Specific Gravity: 1.07 (PES jacket) / 1.00 (Mixed jacket) / 0.97 (UHMWPE jacket)
Elongation at breaking: 3.5% (when new)
Melting point: 145oC (UHMWPE) - 256 oC (PES)
Resistance to UV radiation: Excellent
Chemical Resistance to ALKALI: Excellent
Chemical Resistance to ORGANIC SOLVENT: Very Good
Chemical Resistance to ACID: Good. Resistant to H2SO4 in temperatures up to 250C

Technical Datasheet
Size (Circ) Size (Diam) Weight (+/- 5%) (Polyester jacket) Weight (+/- 5%) (Mixed jacket) Weight (+/- 5%) (UHMWPE jacket) Minimum Breaking Load
inches mm Kilos /100m Kilos / 100m Kilos / 100m Tons
2 16 17.1 15.9 15.1 20.6
2 1/4 18 22.2 21.1 20 27.0
2 1/2 20 25.8 24.5 23.4 33.4
2 3/4 22 31.6 30 28.6 40.5
3 24 38.6 36.8 35 48.8
3 1/4 26 45.4 43.2 41 56.3
3 1/2 28 51.9 49.4 46.9 66.3
3 3/4 30 58.3 55.5 52.7 73.4
4 32 68.0 64.8 61.6 80.6
4 1/4 34 75.8 72.2 68.6 85.6
4 1/2 36 83.2 79.2 75.2 95.6
4 3/4 38 93.2 88.8 84.4 107.4
5 40 104.7 99.7 94.7 121.5
5 1/4 42 115.0 110.9 105.4 132.0
5 1/2 44 128.4 122.3 116.2 146.3
5 3/4 46 139.4 132.8 126.2 160.5
6 48 149.5 143 138.7 175.6
6 1/4 50 167.0 159 151.1 190.1
6 1/2 52 176.4 168 159.6 207.4
7 56 196.0 185 169.9 220.1
7 1/2 60 218.8 208.4 198 257.5
8 64 250.3 238.4 226.5 284.5
8 1/2 68 283.3 269.8 256.3 316.4
9 72 324.2 308.8 293.4 352.5
9 1/2 76 359.1 342 324.9 391.8
10 80 403.1 383.9 364.7 459.5
11 88 514.1 488 465.1 545.9
12 96 567.6 540.6 513.6 625.3

 

 
 
 
 

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