Serving the Marine Industry since 1936

NIKA-Siri® S-12 DB U-Cover Rope

NIKA-Siri® S-12 DB U-COVER ropes are High Modulus / High Performance ropes consisting of a 12strand load bearing core and a protective braided jacket. The load bearing 12strand core is produced using the highest quality UHMWPE fibers and the non-load bearing jacket is also made of UHMWPE fibers. The ropes' construction is firm, round and torque free.

The 12strand core is treated with NIKA-Thane-J coating and the unique heat-setting process enhances the fiber's superior characteristics. NIKA-Siri® S-12 DB U-COVER ropes are 7-8 times stronger than steel ropes and 3 times stronger than polyester (on a weight by weight comparison).

APPLICATIONS:   Mooring (to be used with Synthetic tails) – Tow Lines - STS operations (to be used with Synthetic tails) – Anchoring

The application of NIKA-Thane-J coating and the heat-setting process improve drastically the structural stability and the strength efficiency of the rope. Also, NIKA-Thane-J coating improves the core-jacket interaction, minimizing the jacket slack during operation. The UHMWPE jacket protects the High Modulus load bearing core against abrasion and UV/environmental degradation and thus prolongs its service life. For the jacket repair, a standard repair kit is available upon request.

LR Type Approval Certification

When compared to wire ropes, NIKA-Siri® S-12 DB U-COVER 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).

NIKA-Siri® S-12 DB U-COVER 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

NIKA-Siri® S-12 DB U-COVER JACKETED 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)
Melting point: 145oC (UHMWPE) - 256oC (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 25oC

Technical Data
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Size (Circ) Size (Diam) Weight
 ( +/- 5%)
Min. Breaking Load
Inch mm Kilos/ 100m Kilos/ 220m Tons
1 8 4.3 9.5 5.5
11/4 10 6.7 14.7 8.5
11/2 12 9.5 20.9 12.0
13/4 14 12.7 27.9 16.5
2 16 15.1 33.2 20.1
21/4 18 20.0 44.0 26.5
21/2 20 23.4 51.5 32.9
23/4 22 28.6 62.9 40.1
3 24 35.0 77.0 47.9
31/4 26 41.0 90.2 55.3
31/2 28 46.9 103.2 65.0
33/4 30 52.7 115.9 72.8
4 32 61.6 135.5 79.7
41/4 34 68.6 150.9 84.5
41/2 36 75.2 165.4 94.5
43/4 38 84.4 185.7 106.0
5 40 94.7 208.3 120.2
51/4 42 105.4 231.9 130.9
51/2 44 116.2 255.6 144.9
53/4 46 126.2 277.6 158.0
6 48 138.7 305.1 175.6
61/4 50 151.1 332.4 190.1
61/2 52 159.6 351.1 207.4
7 56 169.9 373.8 220.1
71/2 60 198.0 435.6 257.5
8 64 226.5 498.3 284.5
81/2 68 256.3 563.9 316.4
9 72 293.4 645.5 352.5
91/2 76 324.9 714.8 391.8
10 80 364.7 802.3 459.5
101/2 84 401.5 883.3 501.2
11 88 465.1 1023.2 545.9
12 96 513.6 1129.9 625.3