Bonito 750 Information, Review, Specs

Bonito 750 Drawing
Make
Bonito
Model
750
Builder
Bonito Craft Ltd
Designer
Alan Warwick/Ferris de Joux
Number Built

The Bonito 750 is a prominent high-performance trailer sailer, primarily recognized in the Australasian market as a versatile racer-cruiser that balances trailerability with genuine offshore capability. Originally developed during the boom of the New Zealand and Australian trailer yacht scenes in the late 1970s and 1980s, the model is often associated with the design work of Alan Warwick and Ferris de Joux. The 750 is structurally robust, typically constructed of glass-reinforced polyester (GRP), and features a retractable keel system that allows for shallow-water access and easy ramp launching. It shares a significant lineage with the Trojan 750, a nearly identical hull that was later modernized and rebranded as the Eclipse 750 by Pacific Trailer Yachts. The model remains a staple of regional trailer yacht championships due to its competitive handicap and reliable sea-keeping.

Sailing Performance & Handling

The Bonito 750 is widely regarded as one of the stiffer and more weatherly boats in the 7-to-8-meter trailerable class. With a Class Based Handicap (CBH) of approximately 0.710, it consistently outpaces its predecessor, the Bonito 25, which carries a lower rating of 0.700. This performance advantage is largely attributed to a refined hull shape with a flatter transom and a high-aspect fractional rig.

On the water, the boat is known for its ability to point high and track exceptionally well, a trait highlighted in technical documentation from John Crawford Marine, which maintains extensive archives on the model's history. The 7/8ths fractional rig, often featuring swept-back spreaders and a tapered mast, provides a responsive feel that allows for fine-tuning in varying wind conditions. When well-trimmed, the 750 feels more like a fixed-keel yacht than a typical centerboarder, maintaining stability even in the building breezes and chop common to coastal reaches like Moreton Bay or the Hauraki Gulf.

Interior Comfort & Variations

For a vessel that can be legally towed by a medium-to-large vehicle, the Bonito 750 offers a surprisingly voluminous interior. The cabin is typically configured with a five-berth layout, comprising a double V-berth in the bow, a convertible dinette, and two generous quarter berths. A standout design feature is the "pop-top" or pivoting main hatch, which significantly increases headroom in the galley area—often reaching upwards of 1.7 meters (5'7")—making it functional for overnight cruising.

Variations of the hull exist under different names, most notably the Trojan 750 and the later Eclipse 750. While the hull lines remained largely consistent, the Eclipse variant introduced a modernized open-plan interior and replaced traditional timber reinforcements with a full-length moulded liner bonded to the hull, which added positive buoyancy and increased structural rigidity. Earlier Bonito 750 builds frequently featured marine-grade plywood bulkheads and traditional manual pump systems for fresh water, while later units might be found with electric keel hoists and upgraded galley units.

The Bonito 750 has maintained a steady presence in nautical media within the Southern Hemisphere for decades. It is a recurring subject in the "Trailer Sailer Library" of major regional brokerages and was famously featured in Trade-A-Boat NZ as the foundation for the "reinvented" Eclipse series. The yacht "Starship" is one of the most well-documented examples of the class, serving as a benchmark for the model's performance in regional regattas and appearing in multiple promotional and technical sheets.

Known Issues & Buyer’s Checklist

Prospective buyers should prioritize a thorough inspection of the following technical areas:

  • Keel Mechanism: The retractable keel uses a pivot bolt and a hoisting system (either manual or electric). Inspect the pivot area for "clunking" while underway, which indicates bush wear, and check the hoist cable for fraying or corrosion.
  • Deck Core Integrity: Like many GRP yachts of this era, the 750 uses plywood reinforcement in high-load areas such as the mast base and winch pads. Use a phenolic hammer to check for delamination or soft spots, particularly around the chainplates.
  • Window and Hatch Seals: The long, tinted acrylic windows are a signature of the Warwick/de Joux design but are prone to leaking if the original sealant has degraded. Check for water staining on the interior liner.
  • Rudder Gudgeons: The transom-hung rudder is subject to significant leverage. Inspect the mounting points on the transom for stress cracks in the gelcoat.

Community & Resources

The primary hub for technical support and class rules is the New Zealand Trailer Yacht Association (NZTYA), which oversees the safety regulations and handicap ratings for the model. Owners also frequently collaborate through regional trailer sailer forums to share modifications for the keel lift system and rigging upgrades.

The Verdict

Pros:

  • Excellent performance for its class, with a competitive handicap.
  • Spacious interior with clever headroom solutions (pop-top hatch).
  • Solid GRP construction with a high degree of safety and stability.
  • Legally trailerable, avoiding expensive permanent berthing fees.

Cons:

  • Complex keel mechanism requires regular maintenance.
  • Aged examples may suffer from typical GRP "gotchas" like deck core moisture.
  • Large size requires a substantial towing vehicle (approx. 1,800kg–2,000kg total weight).

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Lifting
Rudder
1x —
Ballast
1199 lbs
Displacement
3254 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
24.74 ft
Waterline Length (LWL)
19.69 ft
Beam
8.2 ft
Draft
4.83 ft
Max Headroom
5.68 ft
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
240.9 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
17.55
Ballast / Displacement Ratio
36.85
Displacement / Length Ratio (D/L) Ratio
190.3
Comfort Ratio
14.38
Capsize Screening Formula
2.21
Hull Speed
5.95 kn