Serving the Marine Industry since 1936

SK78 Prisma-Siri® S-12 Rope

SK78 Prisma-Siri® S-12 is a unique 12 strand High Modulus/High Performance rope made of SK78 fibers. The Prisma® Shield technology enhances the SK78 fiber’s superb characteristics, resulting in a really strong and durable rope, ideal for the most demanding applications in the shipping industry.

SK78 Prisma-Siri® S-12 ropes are 8 times stronger than steel ropes and 3 times stronger than polyester (on a weight by weight comparison).

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

The special Prisma® Shield technology and the elaborate in-house heat-setting process upgrade the SK78 fibers 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 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 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.

Technical Specifications

Specific Gravity: 0.97
Elongation at breaking: 3.5% (when new)
Standard Color: Light Red
Melting point: 145oC (UHMWPE)
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%) Minimum Breaking Load
inches mm Kilos /100m Kilos /220m Tons
2 16 16.1 35.4 27.8
2 1/4 18 21.5 47.3 35.8
2 1/2 20 24.1 53 42.6
2 3/4 22 28.6 62.9 51.6
3 24 33.5 73.7 59
3 1/4 26 39.2 86.2 67
3 1/2 28 45.8 100.8 75.5
3 3/4 30 54 118.8 86
4 32 59 129.8 96.1
4 1/4 34 64.5 141.9 102.3
4 1/2 36 71.8 158 112
4 3/4 38 80.3 176.7 125.7
5 40 88.5 194.7 138
5 1/4 42 98.6 216.9 153.5
5 1/2 44 107.4 236.3 166.1
5 3/4 46 115 253 182.2
6 48 127 279.4 197.8
6 1/4 50 137.6 302.7 207.5
6 1/2 52 144.3 317.5 222.9
7 56 170.4 374.9 254.3
7 1/2 60 190.4 418.9 282.6
8 64 224.9 494.8 315.9
8 1/2 68 257.4 566.3 358.4
9 72 285.1 627.2 399
9 1/2 76 320 704 421.2
10 80 341 750.2 452
11 88 437.9 963.4 568
12 96 515 1133 630