The Bruce Roberts Spray 42 is a quintessential heavy-displacement cruiser, standing as a modern interpretation of Captain Joshua Slocum’s legendary Spray. Designed by the prolific Australian designer Bruce Roberts-Goodson, the Spray 42 is engineered for blue-water autonomy rather than regatta speed. Unlike production boats from large-scale manufacturers, the Spray 42 was primarily released as a set of plans or a pre-cut kit, meaning the vessels found on the market today are often custom-built in steel, aluminum, wood-epoxy, or fiberglass. According to the Bruce Roberts Official Website, the 42-foot variant is part of a lineage that prioritizes massive internal volume and ultimate stability for long-term liveaboard voyaging. Its hull form is characterized by a long, deep keel, a high-volume bow, and a variety of stern configurations, including the traditional "Slocum" transom or a more modern sugar-scoop for easier water access.
Bruce Roberts Spray 42 Information, Review, Specs
- Make
- Bruce Roberts
- Model
- Spray 42
- Builder
- —
- Designer
- —
- Number Built
Sailing Performance & Handling
The sailing characteristics of the Spray 42 are defined by its immense displacement and high ballast ratio. This is not a "lively" boat in light airs; rather, it is a momentum-driven vessel that excels when the wind rises above 15 knots. With its full keel and heavy displacement-to-length ratio, the 42 offers exceptional directional stability, meaning it tracks with minimal helm correction—a critical trait for short-handed cruising.
As noted by Bruce Roberts in his design philosophy, the hull’s wide beam provides a high degree of "initial stability," allowing the boat to remain relatively upright even when pressed. However, the trade-off for this stability is a larger wetted surface area, which can make the boat sluggish in light winds and less weatherly than fin-keel contemporaries. Owners typically rig these as cutters or ketches to break the sail area into manageable sizes. When properly trimmed, the Spray 42 is known for its "sea-kindliness," a term researchers use to describe a motion that is predictable and less fatiguing for the crew during multi-day offshore passages.
Interior Comfort & Variations
One of the primary reasons builders choose the Spray 42 is for its cavernous interior. The design utilizes a wide beam that is carried well aft, providing floor space often compared to 50-foot production monohulls. Because many Spray 42s were amateur or custom-built, the interior layouts vary significantly. Common configurations include a large raised saloon with a "pilot house" feel, offering 360-degree visibility, or a more traditional sunken galley and saloon layout.
The 42-foot hull is often seen in several sibling variations, most notably the Spray 40 and the Spray 45. The 42 typically offers a dedicated aft cabin, which in some versions is a full-beam master suite, a feat made possible by the hull’s generous volume. Headroom is rarely an issue, with most builds exceeding 6'4" in the main cabin. Materials found inside depend heavily on the original builder's budget, ranging from utilitarian marine plywood to high-end teak or mahogany joinery.
Popular Mentions & Media
The Spray 42 benefits from the "Spray" brand's immense cultural footprint in the sailing world. While Joshua Slocum’s original boat was a 36-foot oyster sloop, the Bruce Roberts Spray series is arguably the most successful modern adaptation of that design. The 42-foot model has been a favorite for documentary-style voyagers who value safety over speed. While not frequently featured in racing media, the model is a staple in long-distance cruising literature and has been used by numerous "round-the-world" families who document their journeys via private blogs and cruising journals.
Known Issues & Buyer’s Checklist
Because the Spray 42 is frequently a kit-built boat, the primary "gotcha" for any buyer is the quality of the original construction. Unlike a factory-built Beneteau or Hallberg-Rassy, no two Sprays are identical.
- Weld Quality and Corrosion: For steel versions, an ultrasound of the hull is mandatory. Researchers often point to the "dead spaces" behind cabinetry where insulation may have trapped moisture against the hull, leading to "rust-out" from the inside.
- Weight and Trim: Amateur builders often add excessive weight in the form of heavy cabinetry or oversized tanks. This can lead to the boat sitting below its designed waterline, affecting performance and stability.
- Tankage Accessibility: In many custom builds, fuel and water tanks were welded directly into the hull or placed in areas that are now inaccessible. Inspect these for leaks, as replacement can require cutting out parts of the interior or deck.
- Rigging Loads: Given the heavy displacement, the standing rigging on a Spray 42 is under significant tension. Ensure the chainplates (where the shrouds meet the hull) are robustly reinforced, especially on wooden or fiberglass builds.
Community & Resources
The Spray 42 is supported by a robust global community of "Roberts" owners. The most prominent resource is the Bruce Roberts Official Site, which still provides support and updated plans for the Spray series. Additionally, there are several dedicated Spray-specific owner groups that share technical wikis regarding steel maintenance and rigging modifications for the 40-45 foot range.
The Verdict
The Bruce Roberts Spray 42 is a "slow and steady" tank of a sailboat, designed for those who measure progress in days rather than knots. It is an ideal platform for a couple or family looking to live aboard while traversing remote corners of the globe.
Pros:
- Exceptional Stability: A very safe, predictable platform in heavy weather.
- Massive Volume: Unmatched interior living space for its length.
- Construction Integrity: When built correctly (especially in steel), it can survive impacts that would sink lighter GRP boats.
- Customization: No two layouts are the same, allowing for a wide variety of "personalities" on the used market.
Cons:
- Light Wind Performance: Requires the engine or very large reaching sails when the wind drops.
- Variable Build Quality: The "amateur builder" factor requires a very rigorous and expensive survey.
- Maneuverability: The long keel makes backing into tight marina slips a challenge for the uninitiated.
Measurements
Construction & Hull
- Construction Material
- —
- Hull Type
- — Sailboat
- Keel Type
- —
- Ballast
- -
- Displacement
- -
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- -
- Waterline Length (LWL)
- -
- Beam
- -
- Draft
- -
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- —
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- -
Calculations
- Sail Area / Displacement (SA/D) Ratio
- —
- Ballast / Displacement Ratio
- —
- Displacement / Length Ratio (D/L) Ratio
- —
- Comfort Ratio
- —
- Capsize Screening Formula
- —
- Hull Speed
- — kn