The She 31 represents a pinnacle of 1970s British boatbuilding, emerging from the fruitful collaboration between South Hants Engineering and the legendary design office of Sparkman & Stephens (S&S). Known formally as S&S Design No. 2055, the She 31 was conceived during an era when the International Offshore Rule (IOR) influenced hull shapes, yet it avoided the extreme "pinched" ends that plagued later designs. The result is a yacht that balances aesthetic grace with a formidable reputation for offshore resilience. Produced primarily between 1969 and the mid-1970s, the She 31 was marketed as a high-quality alternative to more mass-produced contemporaries, offering a level of fit and finish that reflected its semi-custom origins in the South of England.
She 31 Information, Review, Specs

- Make
- She
- Model
- 31
- Builder
- South Hants Engineering
- Designer
- Sparkman & Stephens
- Number Built
- Production Year(s)
- 1969 - ??
Sailing Performance & Handling
The She 31 is widely celebrated for its "big boat" feel despite its modest 30-foot 7-inch length. With a displacement-to-length ratio that leans toward the heavier side of the cruiser-racer spectrum, the hull provides a remarkably stable and dry ride in choppy conditions. The yacht features a deep fin keel and a skeg-hung rudder—a hallmark of S&S designs of this vintage—which grants it exceptional directional stability and tracking.
Under sail, the boat is famously close-winded. Owners often report that the She 31 can maintain an edge over modern cruisers when beating into a breeze, thanks to its narrow beam and deep 5-foot 6-inch draft. While its high ballast ratio makes it a stiff vessel capable of carrying full sail longer than its competitors, the IOR influence means it can be sensitive to trim. On a reach or run, the boat remains predictable, though like many designs of its era, it requires an attentive hand on the helm in a following sea to prevent the hull from oscillating. Editorial reviews in Yachting Monthly have frequently highlighted the model’s "unburstability," noting that it handles heavy weather with a composure that inspires confidence in shorthanded crews.
Interior Comfort & Variations
Stepping below deck, the She 31 reveals the limitations of 1970s design logic regarding volume, prioritizing seaworthiness over "dockside living." The beam is relatively narrow by modern standards, which results in a cozy, secure cabin that is well-suited for life at sea but can feel snug for a large family. The traditional layout typically includes a V-berth forward, a compact heads compartment, and a saloon with two settee berths (one often converting to a double) and a pilot berth.
The interior joinery is a standout feature, often finished in high-quality teak or mahogany that has aged gracefully. South Hants Engineering offered several variations on the theme; while the standard She 31 was the most common, a "Traveller" version (often associated with the slightly larger 32 or 9.5 models) prioritized cruising amenities. Sibling models built on similar design philosophies include the smaller She 27, which offers surprisingly similar performance in a more compact package, and the She 33 and She 36, which provide the standing headroom and expanded galley space that the 31 occasionally lacks.
Popular Mentions & Media
The She 31 occupies a revered space in British yachting culture, often appearing in the "Classics" sections of major maritime publications. Its pedigree as an S&S design ensures it is a frequent participant in "Round the Island" races and classic regattas across the Solent. While it may not have the singular "celebrity" owner of a Gipsy Moth, the model is a staple of the "Small Ships" tradition in the UK, frequently cited in sailing memoirs as the ideal first "serious" offshore yacht for aspiring voyagers.
Known Issues & Buyer’s Checklist
Prospective buyers should approach a She 31 with an eye toward the typical aging process of 1970s GRP (Glass Reinforced Plastic) vessels.
- Osmosis: While South Hants Engineering used high-quality resins, many hulls of this era are prone to blistering. A professional survey is essential to check the moisture levels in the laminate.
- Deck Core: The decks are often balsa-cored. Over decades, water ingress around stanchion bases or cleat fittings can lead to delamination and "soft spots."
- Chainplates: The load-bearing points for the rigging should be inspected for signs of movement or weeping, as the original sealant can fail, leading to hidden corrosion.
- Engine Replacement: Many original She 31s were fitted with Bukh or Yanmar engines that may now be at the end of their service life. Buyers should prioritize vessels that have been repowered with modern, fresh-water-cooled units.
- Rudder Bearings: The skeg-hung rudder is robust, but the bushings and bearings can wear, leading to play in the steering system that is best addressed while the boat is hauled out.
Community & Resources
The primary hub for owners is the She Owners Association, a dedicated group that maintains technical archives and organizes rallies. This community is an invaluable resource for sourcing specific replacement parts or seeking advice on structural renovations unique to the South Hants Engineering construction methods.
The Verdict
The She 31 is a connoisseur’s yacht, appealing to those who value sailing pedigree and heavy-weather capability over interior volume and modern "sugar-scoop" sterns. It remains one of the most affordable ways to own a genuine Sparkman & Stephens design.
Pros:
- Exquisite upwind performance and tracking.
- High-quality S&S design pedigree and robust construction.
- Elegant, timeless aesthetics that stand out in any marina.
- Stiff and seaworthy, making it an excellent platform for offshore passage-making.
Cons:
- Limited interior volume and narrow beam compared to modern 30-footers.
- Restricted headroom in certain areas of the cabin.
- Aging GRP systems require diligent maintenance and potential hull treatment.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Skeg-Hung
- Ballast
- 3400 lbs (Iron)
- Displacement
- 7800 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 30.33 ft
- Waterline Length (LWL)
- 22 ft
- Beam
- 8.83 ft
- Draft
- 5.42 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 410 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 16.68
- Ballast / Displacement Ratio
- 43.59
- Displacement / Length Ratio (D/L) Ratio
- 327.02
- Comfort Ratio
- 27.03
- Capsize Screening Formula
- 1.78
- Hull Speed
- 6.29 kn