Dyneema is still the most effective material for preventing halyard lengthening. Only it remains expensive compared to polyester. This is why it is found on racing or regatta yachts, and more rarely on cruising yachts.
There are several Dyneema qualities: the SK 78 and since 2009, the SK 90. The higher the number, the stronger the Dyneema is - but the more expensive it is!
Recently the Dyneema brand offers a grade SK38. The English rope manufacturer Marlow uses it to make a halyard named D2 Club. With an unstretched and untinned core braided in Dyneema SK38, the halyard is as strong as a model of equivalent diameter in polyester (same breaking load) but with much less elongation (which is what you ask of a halyard!). In addition the Dyneema does not load itself with moisture.
D2 Club
| Diameter | Weight | Breaking load | Workload | Price per meter |
| 8 mm | 41.4 g/m | 2,190 kg | 1,970 kg | 2.97 euros |
| 10 mm | 69.8 g/m | 3,780 kg | 3,400 kg | 4.41 euros |
| 12 mm | 87.6 g/m | 11,400 kg | 4,680 kg | 6.05 euros |
| 14 mm | 119.7 g/m | 16,300 kg | 6,660 kg | nc |
