Jeanneau Sun Odyssey 42 I Information, Review, Specs

Make
Jeanneau
Model
Sun Odyssey 42 I
Builder
Jeanneau (FRA)
Designer
Marc Lombard
Number Built
Production Year(s)
2005 - ??

The Jeanneau Sun Odyssey 42i, designed by the renowned naval architect Marc Lombard and launched in 2006, represents a significant evolutionary step for the French builder’s core cruising range. Replacing the successful Sun Odyssey 40.3, the 42i was engineered to balance high-volume accommodations with a hull shape capable of punchy performance. The "i" in the model name signifies the vacuum-injection molding process used for the deck, a technique that at the time allowed Jeanneau to create a lighter, stiffer deck with a finished underside, lowering the vessel's center of gravity compared to traditional hand-laid laminates. This model was produced alongside its sibling, the Sun Odyssey 42 DS, which utilized the same Marc Lombard hull but featured a raised "Deck Saloon" coachroof and a entirely different interior arrangement focused on a massive aft owner's suite.

Sailing Performance & Handling

The Sun Odyssey 42i is frequently cited for its balance and predictability under sail. Marc Lombard’s design philosophy for this hull emphasized a long waterline and a beam that is carried well aft, which provides significant initial stability. This hull geometry, combined with twin helm stations, allows the boat to track well even when pressed in a breeze. In editorial testing, Yachting Monthly noted that the boat feels responsive for a production cruiser, particularly when equipped with the deep-draft keel option (2.13m).

For sailors seeking more engagement, Jeanneau produced the "Performance" version of the 42i. This variant features a taller mast with a greater sail area, Dyneema running rigging, a folding propeller, and upgraded Harken winches. While the standard 42i has a respectable Sail Area/Displacement (SA/Disp) ratio suited for coastal hops and family cruising, the Performance version pushes the boat into the realm of serious club racing or fast passage-making. The dual-wheel configuration provides excellent visibility from the high side, and the cockpit layout is optimized for short-handed sailing, with primary winches situated within reach of the helm.

Interior Comfort & Variations

The interior of the 42i is defined by its use of "Fine Teak" or Alpi wood finishes and an abundance of natural light provided by the distinctive "i" series deck windows. Jeanneau offered two primary configurations: a two-cabin owner’s version and a three-cabin family/charter version. In the two-cabin layout, the boat features a massive storage locker (accessible from the cockpit and the interior) and a larger head with a separate shower stall. The three-cabin version splits the aft section into two symmetrical double berths, which is the more common configuration found on the brokerage market.

The galley is an L-shaped arrangement to starboard, featuring high-quality Corian-style countertops and a top-loading refrigerator. A key design element of this era was the sliding navigation station to port; the chart table can be moved aft to extend the length of the port-side settee for lounging or used as a dedicated workspace. According to the official Jeanneau archive, the design maximized headroom throughout the main salon, maintaining over 6’4” of vertical clearance, which contributes to the airy, open feel that distinguishes it from the more enclosed feel of older 40-foot models.

Known Issues & Buyer’s Checklist

Prospective buyers should focus on several technical areas specific to Jeanneau's construction during the mid-2000s:

  • Rudder Bearings: Like many high-volume production boats of this age, the self-aligning rudder bearings can develop play. If there is a noticeable "clunk" or vibration in the steering, the JEFA or JP3 bearings may require replacement.
  • Injection Deck Checks: While the injection process is generally superior, buyers should inspect the deck for any signs of delamination or "crunching" around high-load fittings like the genoa tracks or windlass, which can indicate moisture ingress into the core.
  • Keel-to-Hull Joint: The 42i uses a cast iron keel. Maintenance of the epoxy barrier coat is essential to prevent rust-jacking. Inspect the internal keel bolts and the "smile" at the leading edge of the keel-to-hull joint for signs of movement.
  • Through-Hull Fittings: The original factory-installed brass through-hulls and valves have a finite lifespan. Many owners on technical forums recommend replacing these with Marelon or Bronze if they show signs of pinking or corrosion.
  • Rigging Age: As many 42i models are now approaching 15–20 years of age, the standing rigging is likely due for replacement if it hasn't been serviced recently. Pay close attention to the spreaders and the mast step for any signs of compression or galvanic corrosion.

Community & Resources

The Sun Odyssey 42i benefits from a robust global owner network. The Jeanneau Owners Network serves as the primary technical repository for the model, offering owner-contributed manuals, equipment upgrades, and specific maintenance logs. Because the 42i was a global success, parts are still widely available through Jeanneau’s dealer network and third-party suppliers who specialize in French production yacht components.

The Verdict

The Jeanneau Sun Odyssey 42i remains a highly sought-after mid-sized cruiser for those who value modern aesthetics and reliable sailing characteristics without the complexity of a pure racing machine.

Pros:

  • Advanced Construction: The vacuum-injected deck provides a high strength-to-weight ratio and a clean interior finish.
  • Versatile Cockpit: The wide, twin-wheel cockpit is excellent for both Mediterranean-style entertaining and offshore safety.
  • Performance Potential: The Marc Lombard hull is genuinely fast, especially in the "Performance" trim.

Cons:

  • Cast Iron Keel: Requires more diligent maintenance than lead to prevent corrosion.
  • Galley Storage: While the galley is well-placed, some long-term cruisers find the cupboard space for provisions slightly limited in the three-cabin version.
  • Production Hardware: Some deck hardware and interior latches are standard-grade and may require upgrading for heavy blue-water use.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Bulb
Rudder
1x Spade
Ballast
5628 lbs
Displacement
18541 lbs
Water Capacity
94 gal
Fuel Capacity
34 gal

Dimensions

Length Overall (LOA)
42.16 ft
Waterline Length (LWL)
38.06 ft
Beam
13.55 ft
Draft
6.99 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
48.82 ft
E (Main Foot)
14.6 ft
I (Foretriangle Height)
50.85 ft
J (Foretriangle Base)
15.94 ft
Forestay Length (est)
53.29 ft
Sail Area
762 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
17.4
Ballast / Displacement Ratio
30.35
Displacement / Length Ratio (D/L) Ratio
150.13
Comfort Ratio
22.67
Capsize Screening Formula
2.05
Hull Speed
8.27 kn