Alternative Rigs Page 3

Sailors are a conservative lot. The sea takes no prisoners, and most people don’t care to experiment when the cost of failure is potentially great. That’s why both futuristic and some older traditional sailing rigs struggle for acceptance and often receive little more than patronizing smiles from so-called modern mariners.Ironically, the conventional marconi rig that now dominates sailing
Author:
Updated:
Original:
swing_rog_makeup
swing_rig

Swing Rig

This rig is new and relatively untried. Designed by Van de Stadt and built by Dutch composite-structures specialist Johan Vels, it features a single full-batten sail set on a boom and an unstayed carbon wing mast that can pivot through 360 degrees. This enables the sail to be correctly sheeted on the broadest of reaches while still functioning as an airfoil and generating lift. It can also be gybed by letting it swing forward of the mast and taking it around on a lazy sheet led from the other side.

Because the mast swivels as the sheet is eased or trimmed, the relationship between the mast’s foil section and the sail is constant, creating what is effectively a flowing wing profile on all points of sail. Just below the deck bearing, the mast is tilted forward roughly 5 or 6 degrees. This means that as the sheet is eased, the above-deck portion of the spar angles itself to windward of the conventional vertical plane relative to the deck. This carries the sail’s center of effort closer to the boat’s centerline, which helps balance the helm. This also has a marked influence on sheet loads, which are reportedly light.

To date, use of these rigs has mostly been confined to extreme raceboats, but some useful passages have already been made and Vels has constructed at least one large swing-rig cruiser.

Freedom Rig

freedom_rig

The Freedom Rig was developed in the mid-1970s by former Olympic Finn sailor Garry Hoyt. The early Freedoms featured a cat-ketch rig with freestanding spars and two-ply wraparound sails set on wishbone booms; they were among the first production boats to use carbon-fiber masts. The sails required no vang and were satisfyingly efficient. As with any unstayed rig, the need to reef is minimized because the top of the mast twists off and depowers the rig as the wind increases. Downwind, the sail can be winged out square to the wind. Hoyt’s original boat was the Freedom 40, which had a distinctive hull well-suited to the rig. Various other versions followed, including the Freedom 33, designed by SAIL’s technical consultant, Jay E. Paris.

Over time the Freedom rig evolved, sprouting full-batten sails with conventional booms and tracks and slides on freestanding carbon spars. In 1987, the concept was taken on by Gary Mull with the cat-sloop Freedom 30 and larger versions. More-modern Freedoms feature standard booms and a single mast, but the unstayed carbon-fiber spar has remained, headed up by an unconventional self-tacking jib.

The early boats had only adequate upwind performance, but went like rockets downwind. As with all unstayed rigs, chafe is eliminated, making Freedom rigs attractive for long downwind passages. Successful variations of the original wishbone-boom rig have also been seen over the years on Nonsuchs and Wyliecats.

Related

pirate-marlin-logo

Pirate’s Cove Billfish Tournament

This Spring has felt a bit like a slow day of fishing but it’s almost time to time to Bait…and Switch. The Pirate’s Cove Billfish Tournaments offer something for every member of your crew. Exceptional fishing, fun times with family, old friends and new. Our run is short, our ...read more

Tusk.00_00_16_21.Still001

Tusk by Spyderco

Spyderco's Tusk knife combines a blade and marlinspike to create a multitool perfect for marine use. Made with corrosion resistant materials like titanium and LC200N steel, a nitrogen alloyed steel, and Spyderco-exclusive locking mechanisms, this knife is one of the toughest ...read more

IY11.98_fTaccola©DJI_0200

Italia 11.98 Performance-cruiser

This past winter, SAIL principal editor, Adam Cort, check out the new Italia Yachts’ new 11.98 performance-cruiser at the boot Dusseldorf show in German, and says he can attest to the fact it’s a boat more than worthy of the attention of North American sailors. Available in ...read more

01-LEAD-2017_IDALEWIS_0219

Racing: Doublehanded

I was born in 1955, and although I was a tad young to actually follow the first Observer Single-Handed Transatlantic Race, I grew up in the age of the pioneers of solo offshore sailing—Francis Chichester, Robin Knox-Johnson, Alec Rose, all Knighted for their singlehanded ...read more

newport-400c-updated

Spectra Watermakers

The world's quietest and most energy-efficient watermakers. Our product line ranges from hand operated desalinators that can make 6 gallons a day to our largest system that produces 20,000 gallons of fresh, potable water per day. Spectra Watermakers has the complete package: ...read more

CAPE-COD---Under-sails

Boat Review: Cape Cod

The concept of “daysailer” has grown ever broader over the years. These days the label can be pasted on a boat as small and simple as a Sunfish, as fancy as a 40-footer with a nice big cockpit and plenty of brightwork, or any number of concoctions in between. This Cape Cod ...read more

C-1002-600px

Sirius Signal

Be seen with the brightest SOS Distress Lights Available C-1002 Two Color Distress Light Flag & Whistle The Sirius Signal model C-1002 SOS eVDSD (electronic visual distress signal device) is the first product to be engineered to the new RTCM standard 13200.0 — accepted as ...read more