The PJ-30, commonly referred to as the Palmer Johnson 30 or the S&S Half-Tonner, represents a high-water mark for production racing yachts of the early 1970s. Designed by the prestigious firm of Sparkman & Stephens as Design #2041, the vessel was conceived to compete under the International Offshore Rule (IOR) Half-Ton class. While marketed and distributed in North America by Palmer Johnson, the hulls were constructed by the renowned Nautor yard in Finland, making the PJ-30 essentially a sister ship to the legendary Swan 30. This pedigree ensures a build quality and aesthetic finish that far exceeded typical production standards of the era.
PJ-30 1/2 Ton Information, Review, Specs
- Make
- PJ-30
- Model
- 1/2 Ton
- Builder
- Hughes Boatworks Ltd.
- Designer
- Sparkman & Stephens
- Number Built
- Production Year(s)
- 1973 - ??
The vessel features the classic IOR profile of the time: a graceful sheer line, a significant tumblehome, and a pinched stern. Historically, it served as a transition point between the heavy-displacement cruisers of the 1960s and the increasingly radical racing machines of the mid-70s. Despite its racing intentions, the PJ-30 remains a popular choice for traditionalists who value the "bank vault" construction associated with early Nautor-built hulls.
Sailing Performance & Handling
The PJ-30 is characterized by exceptional upwind performance, a hallmark of Sparkman & Stephens designs. With a high ballast-to-displacement ratio (often exceeding 45%), the boat is remarkably stiff and carries its sail area well into a freshening breeze. Owners frequently report that the boat "tracks as if on rails," a sensation aided by its deep fin keel and high-aspect spade rudder.
In light air, the PJ-30 requires a large genoa to overcome its relatively high wetted surface area, but once the wind exceeds 10 knots, the hull comes alive. Because it was designed for the IOR rule, it does exhibit some of the "rhythmical rolling" characteristic of that era when sailing deep downwind in heavy seas, a byproduct of the narrow stern. However, unlike many of its flatter-bottomed contemporaries, the PJ-30's V-shaped bow sections prevent slamming in a chop, providing a much more comfortable motion in a seaway than modern light-displacement cruisers.
Interior Comfort & Variations
Unlike modern 30-footers that prioritize "condo-style" volume, the interior of the PJ-30 is snug and sea-kindly. The layout is optimized for use while underway, featuring high-quality teak joinery that reflects its Nautor heritage. The standard configuration typically includes a V-berth forward, a compact head, and a main salon with settee berths. A small galley and a dedicated navigation station are situated aft, near the companionway for easy communication with the helm.
The sibling relationship between the PJ-30 and the Swan 30 is most evident in the interior finishing. While some North American versions (PJ-30) were sold with slightly different upholstery or equipment packages than the European Swan 30, the structural layout remains identical. Headroom is adequate for a racing-oriented 30-footer but may feel restrictive to those accustomed to modern high-volume coastal cruisers. Storage is abundant, designed specifically for stowing sails and gear during offshore passages rather than long-term live-aboard amenities.
Popular Mentions & Media
The PJ-30 gained significant notoriety in the early 1970s through its participation in the Half Ton Cup and various offshore racing circuits. While it did not achieve the singular cult status of the larger Swan 38 or 43, it is frequently cited in maritime literature as the "quintessential S&S Half-Tonner." Its design influenced a generation of sailors who sought a boat that could win on the racecourse on Saturday and cruise safely on Monday.
Known Issues & Buyer’s Checklist
Prospective buyers should approach the PJ-30 with an eye toward the specific maintenance needs of a 50-year-old fiberglass yacht. While the hulls are robust, several areas require technical scrutiny:
- Deck Core Integrity: Like many boats of this era, the PJ-30 utilized a balsa-cored deck. Moisture ingress around old stanchion bases or deck hardware can lead to delamination. A thorough percussion test or moisture meter reading is essential.
- Chainplates and Rigging: The original rod rigging—common on Palmer Johnson boats—may be past its service life. Furthermore, the chainplates are recessed into the hull-to-deck joint area; inspection for weeping or corrosion is critical to avoid rig failure.
- Engine Serviceability: Many units were originally fitted with small Volvo Penta or Farymann diesel engines. Access is tight, and parts for these legacy powerplants are becoming increasingly difficult to source. Many well-maintained PJ-30s have since been repowered with Yanmar or Beta Marine units, which adds significant value.
- Mast Step: The mast is keel-stepped. It is vital to check the base of the aluminum spar and the steel or fiberglass step for galvanic corrosion or compression settling, which can occur after decades of high rig tension.
Community & Resources
The primary hub for technical data and historical documentation for this model is the Classic Swan Association, which treats the PJ-30 and Swan 30 as a single lineage. This organization maintains an extensive archive of original blueprints, sail plans, and owner manuals. Additionally, the Sparkman & Stephens Association provides a forum for owners of various S&S designs to share restoration tips and technical specifications.
The Verdict
The PJ-30 is a "sailor’s sailboat," offering a level of build quality and aesthetic grace rarely found in the 30-foot range today. While it lacks the interior volume of modern designs, it compensates with superior heavy-weather handling and timeless lines.
Pros:
- Exquisite Sparkman & Stephens design with classic "mini-yacht" aesthetics.
- Built to Nautor’s high standards, featuring exceptional joinery and fiberglass work.
- Outstanding upwind performance and sea-kindliness in a blow.
- High resale value and desirability among classic yacht enthusiasts.
Cons:
- Cramped interior compared to modern 30-footers.
- IOR-specific handling quirks (stern-walking) when sailing downwind in heavy air.
- High maintenance requirements typical of older vessels with cored decks and complex rigging.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Skeg-Hung
- Ballast
- 3710 lbs
- Displacement
- 8000 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 29.92 ft
- Waterline Length (LWL)
- 22.67 ft
- Beam
- 9.5 ft
- Draft
- 5.3 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 34 ft
- E (Main Foot)
- 9.5 ft
- I (Foretriangle Height)
- 38 ft
- J (Foretriangle Base)
- 12.5 ft
- Forestay Length (est)
- 40 ft
- Sail Area
- 399 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 15.96
- Ballast / Displacement Ratio
- 46.38
- Displacement / Length Ratio (D/L) Ratio
- 306.54
- Comfort Ratio
- 24.81
- Capsize Screening Formula
- 1.9
- Hull Speed
- 6.38 kn