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 / OFFSHORE / AQUACULTURE / FISHING / YACHTING
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:
- Most cost-effective ropes to purchase due to lower labor requirements in operations and decreased mooring & towing operating times
- Safer and easier to use due to their high strength and low weight.
- 2-3 times longer service life
- 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.
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
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 |