Serving the Marine Industry since 1936

Spectra®-Siri® S-12 DB Rope

Spectra®-Siri® S-12 DB are High Modulus / High Performance ropes with long term fatigue life properties and outstanding quality performance ideal for the critical operations of the shipping industry. They consist of a 12-strand load bearing core (Spectra® S1000 fibers) and a protective braided jacket. This rope construction is firm, round and torque free.

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

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.

Spectra®-Siri® S-12 DB ropes are 12 strand High Modulus ropes, combining the excellent properties of Honeywell’s Spectra® S1000 fibers and an insuperable manufacturing process. The use of the special NikaThane-J coating application on the S1000 fibers and the superior in-house heat-setting process provides a high quality robust rope construction with higher strength efficiency and excellent abrasion resistance. Spectra-Siri® S-12 DB ropes exhibit excellent resistance to UV sunlight and weathering degradation and thus an extended service life (more than 7 years).

Spectra®-Siri® S-12 DB ropes are an excellent wire-rope alternative and offer several benefits:

  1. Most cost-effective ropes to purchase due to lower labor requirements in operations and decreased mooring & towing operating times
  2. High strength-to-size ratio of the S1000 fibers, allowing for lighter weight ropes that are easier to handle.
  3. No corrosion, superior chemical resistance, increased abrasion resistance and excellent flex fatigue
  4. 2-3 times longer service life (compared to wire ropes)
  5. Negligible maintenance costs

Spectra®-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.

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 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 42 115 110.9 105.4 132.0
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 50 167 159 151.1 190.1
6 1/2 52 176.4 168 159.6 207.4
7 56 196 185 169.9 220.1
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