The Sparkman & Stephens (S&S) Gulfstream 42 represents a high-water mark in the collaboration between the world’s preeminent naval architecture firm of the mid-20th century and the legendary Robert E. Derecktor. Born of the Cruising Club of America (CCA) rating rule, the Gulfstream 42 (specifically S&S Design #1433) was conceived as a "gold-plater" cruiser-racer—a vessel capable of winning prestigious offshore races like the Newport-Bermuda while providing a level of interior luxury and "sea-kindliness" that modern light-displacement boats often lack. While some examples were built by other yards, those produced by Derecktor Shipyards are particularly prized for their robust construction and the builder’s storied history in America’s Cup and high-performance yachting. The Gulfstream 42 is essentially a larger, more powerful evolution of the "Finisterre" type, the 38-foot design that dominated racing in the 1950s by proving that a beamy, centerboard-equipped boat could be both fast and exceptionally seaworthy.
S&S Gulfstream 42 Information, Review, Specs

- Make
- S&S
- Model
- Gulfstream 42
- Builder
- Robert Derecktor
- Designer
- Sparkman & Stephens
- Number Built
- 3
- Production Year(s)
- 1960 - ??
Sailing Performance & Handling
The Gulfstream 42 is defined by its versatile underbody, featuring a heavy-displacement hull with a shallow-draft keel and a bronze centerboard. This configuration allows the boat to access thin-water anchorages while providing the deep-bite necessary for upwind performance when the board is lowered. On the water, the boat exhibits the classic "S&S feel": a balanced helm that tracks with remarkable precision and a soft motion in a seaway. Because of its generous beam and high displacement-to-length ratio, the Gulfstream 42 possesses high initial stability, making it a stiff boat that carries sail well into the upper wind ranges.
Handling is characterized by predictability rather than agility. It is not a boat for "round-the-buoys" twitchiness; instead, it excels in offshore conditions where its weight and momentum allow it to punch through a head sea without losing speed. According to historical design notes from Sparkman & Stephens, these hulls were optimized for reaching and running, where the centerboard can be partially raised to reduce drag and move the center of lateral resistance, significantly easing the workload on the helmsman or autopilot.
Interior Comfort & Variations
Inside, the Gulfstream 42 reflects the "yachting" standards of the 1960s, a period when Derecktor’s craftsmanship was at its peak. The layout is typically traditional, featuring a forward V-berth followed by a full-width head. The main salon is often configured with a combination of settee berths and outboard pilot berths—a design hallmark of the era intended to provide secure sleeping quarters for off-watch crew during offshore passages.
Materials vary by hull, as many were semi-custom. However, Derecktor-built versions frequently showcase high-grade Burmese teak or mahogany joinery and white overheads that brighten the cabin. The galley is almost always located aft, adjacent to the companionway for optimal ventilation and communication with the cockpit. Variations exist between the sloop and yawl rigs; the yawl configuration, while more complex to tune, offers a "mizzen staysail" for light-air reaching and the ability to set a small "jigger" to keep the boat head-to-wind at anchor or to balance the sail plan in a gale.
Known Issues & Buyer’s Checklist
Prospective owners should approach the Gulfstream 42 as a "stewardship" project, given the age and sophisticated construction of these vessels.
- Centerboard Assembly: The bronze centerboard and its lifting pennant are critical inspection points. Galvanic corrosion can seize the board in the trunk, and the wire pennant or its turning blocks often require replacement to ensure reliable operation.
- Hull Construction: While Derecktor was a master of various materials, many Gulfstream 42s were built using traditional wood planking or early cold-molded techniques. Buyers must prioritize a structural survey to check for "soft" spots in the wood, particularly around the chainplates and the horn timber.
- Mast Step and Keel Bolts: In boats of this vintage, the metal mast step (often steel or bronze) can suffer from corrosion where it meets the bilge water. Similarly, the keel bolts securing the heavy lead ballast should be drawn and inspected if there is no record of recent service.
- Teak Deck Longevity: If the vessel retains an original laid teak deck, it is likely reaching the end of its lifespan. Leaks through deck fasteners can cause significant damage to the sub-deck or interior cabinetry, making a moisture scan of the deck core essential.
Community & Resources
Owners of the Gulfstream 42 are supported by a passionate network of classic yacht enthusiasts. The Sparkman & Stephens Association is the primary technical resource, maintaining an archive of original blueprints and hull-specific data for Design #1433. For those with Derecktor-built hulls, the shipyard's continued operation in New York and Florida provides a rare link to the original builders for refit advice and historical context.
The Verdict
The S&S Gulfstream 42 is a connoisseur’s yacht, offering a blend of mid-century elegance and proven offshore capability that few modern designs can replicate.
Pros:
- Exceptional sea-kindliness and heavy-weather stability.
- Shallow draft versatility thanks to the centerboard design.
- High "pedigree" value and timeless aesthetic.
- Superb craftsmanship in Derecktor-built examples.
Cons:
- High maintenance requirements typical of classic wood or semi-custom builds.
- Complex rig (in yawl versions) and centerboard mechanics.
- Slower in light air compared to modern fin-keel designs.
Measurements
Construction & Hull
- Construction Material
- Aluminum
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x —
- Ballast
- 7000 lbs (Lead)
- Displacement
- 18445 lbs
- Water Capacity
- 145 gal
- Fuel Capacity
- 95 gal
Dimensions
- Length Overall (LOA)
- 41.51 ft
- Waterline Length (LWL)
- 29.25 ft
- Beam
- 11 ft
- Draft
- 6.25 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
- 784 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 17.97
- Ballast / Displacement Ratio
- 37.95
- Displacement / Length Ratio (D/L) Ratio
- 329.04
- Comfort Ratio
- 35.51
- Capsize Screening Formula
- 1.67
- Hull Speed
- 7.25 kn