Jordan Series Drogue in Dyneema

[fxykty]

For storm survival we decided to go with a Jordan Series Drogue (JSD) rather than a sea anchor due to the propensity of our lightweight cat to yaw at anchor. Note: this thread is not about the selection of a JSD; it’s about assembling a JSD using Dyneema for bridle and rode.

We got 156 cones (based on multihull with loaded displacement 12,000kg) from Ocean Brake Home (unfortunately they’re redoing their website right now so no info there right now). We got cones only as we didn’t want the weight and bulk of double braided polyester (would have been 22mm/7/8” bridle and leader, 18mm/3/4” first, and 14mm/7/16” tail). We’ve used 12mm, 10mm and 8mm Acera Amundsen (Dyneema from Timms Ropes, sourced from Greenline Fishing Gear Greenline Fishing Gear - Home) instead.

Ocean Brake recommends 18kg of weight for this drogue when using double braid polyester. Since the Dyneema floats, there needs to be additional weight, based on some reported testing that I can’t find right now.

I asked Ocean Brake and they recommended 20-22kg of weight. That’s a bit less than I would have expected. Any thoughts?