Jordan Series Drogue

What is it ?

Performance at Sea

Technology

Design Loads and Attachments

Launching and Retrieval

About the Designer

About the Builder

Storm Waves

Wave Science

"The Loss of the Winston Churchill"

Coast Guard Report CG-D-20-87

Mooring and Anchoring

Printable Versions

Soundings-May 2006

Ace Sailmakers: Jordan Series Drogue Pricing and Order Form

 
DESIGN LOADS and ATTACHMENTS

Drogue Design Load
The design load for each drogue configuration is adjusted for the displacement of the yacht.
The design load is the ultimate, once in a lifetime, peak transient load that would be imposed on the drogue in a “worst case” breaking wave strike. The working load during a severe storm is about 10 % of this value.

MONOHULLS
MULTIHULLS
Displacement
Design Load
Displacement
Design Load
10,000 #
  8,000 #
 
  6,000 #
10,000 #
15,000 #
10,000 #
 
12,000 #
12,000 #
20,000 #
13,000 #
 
18,000 #
14,000 #
25,000 #
16,000 #
 
30,000 #
19,000 #
30,000 #
19,000 #
 
35,000 #
22,000 #
 
40,000 #
25,000 #
 
45,000 #
27,000 #
 
50,000 #
30,000 #
 

 

Bridle Legs
The design loads for each of the bridle legs are 70% of the drogue design loads.

Attachments on the Hull
The hull attachments for the drogue should be as far outboard and as far aft as possible.
I have no information on the ultimate strength of a typical sheet winch installation, and it would be difficult to evaluate each structure. Unfortunately, a winch is not an ideal structure, since the load is applied above the deck line and tends to overturn the winch and pull it out. The optimum attachment for the drogue is clearly a strap similar to a chainplate, bolted to the hull at the corners of the transom and extending aft with a shackle.

For a load of 14,000 lbs, a strap ¼ x 2.25 x 18 inches attached with six 3/8 bolts would provide a conservative design.

A large steel cleat would be acceptable if the deck is thick solid fiberglass and a steel plate is provided underneath.

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Jordan Series Drogue  | What is it?  | Performance at Sea | TechnologyDesign Loads and Attachments | Launching and Retrieval | About the Designer | About the BuilderStorm Waves Wave Science | "The Loss of the Winston Churchill" | Coast Guard Report CG-D-20-87  | Mooring and Anchoring | Retrieving The Drogue | Printable Versions | Soundings-May 2006| Ace Sailmakers: Jordan Series Drogue Pricing and Order Form

If you have any comments or questions on drogue sales or configurations, please email them to AceSailMakers@yahoo.com or call us at (860) 739-5999. On drogue design or technology, please email them to donaldjordan1916@comcast.net or call at (860) 633-1702.

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