Sun Odyssey 39I Jeanneau
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About the Sun Odyssey 39I Jeanneau
Designed by Marc Lombard and built by Jeanneau from 2005 to 2010, this 39-footer represents a well-balanced approach to modern cruising sailboat design. The Sun Odyssey 39I combines coastal cruising comfort with respectable sailing performance, making it an attractive option for sailors seeking versatility without compromising livability. At 38.91 feet overall with a 12.73-foot beam, the boat offers generous interior volume while maintaining elegant proportions. The fin keel with bulb design and spade rudder configuration delivers responsive handling characteristics, while the fractional sloop rig provides excellent sail control and balance. With 670 square feet of sail area driving 16,160 pounds of displacement, the boat achieves a theoretical hull speed of 7.94 knots and demonstrates good light-air performance. The moderate comfort ratio of 23.25 reflects the design's emphasis on contemporary cruising priorities, favoring spacious accommodations and ease of handling over traditional heavy-displacement seakeeping. The capsize screening formula of 2.02 indicates solid stability for coastal and offshore passages. Jeanneau's fiberglass construction quality and the reliability of the 41-horsepower auxiliary engine make this an appealing choice for couples or small families seeking comfortable cruising capabilities with spirited sailing performance.
Market Price Estimate
Beta
Small sample size. This estimate is based on fewer than 5 listings and may not be representative of the true market. Use with caution.
$59,669 – $139,500
typical asking price
Rate a listing price
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About this estimate
- Prices are based on recent asking prices from public listings — not actual sale prices, which are typically lower.
- Condition is not factored in. A well-maintained boat with new sails and engine can be worth significantly more than a project boat of the same model.
- Location affects price. Boats in landlocked states or areas with fewer buyers often sell for less than those on the coast.
- Year of manufacture is not filtered. Older examples of this model will generally be priced lower than newer ones.
- Included equipment varies widely. A boat with a full suite of electronics, dodger, and new standing rigging may command a large premium.
- Outliers are automatically excluded using statistical filtering to improve accuracy, but some bad data may remain.
Core Dimensions
LOA (Length Overall)
38.91 ft / 11.86 m
LWL (Waterline Length)
35.15 ft / 10.71 m
Beam
12.73 ft / 3.88 m
Max Draft
6.56 ft / 2.00 m
Displacement
16,160.00 lb / 7,330 kg
Ballast
5,026.00 lb / 2,280 kg
Sail Area (Reported)
670.00 ft² / 62.25 m²
Design & Construction
Hull Type
Fin w/bulb & spade rudder
Rigging Type
Fractional Sloop
Construction
FG
Designer
Marc Lombard
Builder
Jeanneau
First Built
2005
Last Built
2010
Related Sailboats
Regatta 39 Jeanneau · King 40 · Regatta 39 Mh Jeanneau · First 407 Beneteau · X 40
Owner Reviews
No owner reviews yet — be the first to share your experience with this boat.
Known Issues & What to Watch For
The deck-to-hull joint on early 39i production uses an external aluminum toe rail to clamp the joint, and sealant failure here is common, allowing water ingress into the hull-deck interface and down into the interior joinery. Check for staining and soft deck laminate along the rail.
2005–2007 models
The molded-in chainplate area and surrounding deck laminate is known to develop stress cracking and delamination under the genoa tracks, particularly where loads transfer to the relatively thin deck sandwich construction.
The lead bulb keel is attached to a cast iron fin with stainless steel bolts; the interface between the cast iron fin and the lead bulb is prone to crevice corrosion and separation, sometimes visible as a gap or rust weeping at the join. This joint should be closely inspected.
Keel sump area in the bilge frequently shows evidence of water pooling and mild rust staining around the keel bolt tabbing; the interior glassing over the keel bolts can make corrosion assessment difficult without removal of the limber hole covers.
The spade rudder bearing housing is a known wear point; the lower rudder bearing is undersized for the loads generated by the fin-and-bulb configuration, and play in the rudder stock develops relatively early in the boat's life. Check for any wobble or slop at the rudder head.
The in-mast furling mainsail option fitted to many 39i models has a reputation for jamming in the extrusion slot, particularly as the aluminum luff foil corrodes internally. Inspect the extrusion interior and the furling motor/drum carefully if this option is fitted.
The Yanmar 3JH4E (29hp) fitted to most 39i models has a raw water impeller housing that is difficult to access in the tight engine compartment; deferred impeller service is common, leading to overheating damage to the heat exchanger. Verify service history specifically for impeller and heat exchanger.
The engine compartment ventilation on this model is marginal, and heat buildup can cause premature degradation of fuel hose fittings and wiring insulation near the engine. Inspect all hose connections and wiring runs inside the compartment carefully.
The 12V distribution panel and wiring runs on early production boats used undersized connectors at the bus bar, prone to high-resistance connections and overheating. Look for discoloration or melted insulation near the main panel.
2005–2007 models
The hull liner system bonds interior furniture modules to the hull, making inspection of the hull skin behind cabinetry essentially impossible without destructive removal. Water ingress behind the forward cabin liner is a reported issue that often goes undetected until significant damage has occurred.
Own or have surveyed a Sun Odyssey 39I Jeanneau? Submit a known issue
Performance Ratios
SA/Displacement
Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
16.83
Ballast/Displacement
Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
31.1
Displacement/Length
Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
166.12
Comfort Ratio
Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
23.25
Capsize Screening Formula
The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
2.02
Hull Speed
Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions.
7.94 kn
S# (Speed Number)
The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
3.11
Pounds/Inch Immersion
Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline.
1,598.82 pounds/inch
SA/Displacement (Calc)
Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure.
16.82
Rig Dimensions
I (Foretriangle Height)
48.06 ft / 14.65 m
J (Foretriangle Base)
13.81 ft / 4.21 m
P (Mainsail Luff)
46.26 ft / 14.10 m
E (Mainsail Foot)
14.60 ft / 4.45 m
SA Fore
331.85 ft² / 30.83 m²
SA Main
337.70 ft² / 31.37 m²
SA Total (100%)
669.55 ft² / 62.20 m²
Est. Forestay Length
50.00 ft / 15.24 m
Engine & Accommodations
Engine Type
Diesel
Horsepower
41
Fuel Capacity
34 gals / 129 L
Water Capacity
94 gals / 356 L
How It Compares
vs. First 407 Beneteau, King 40, Regatta 39 Jeanneau, Regatta 39 Mh Jeanneau, X 40
This boat
Similar boats
Dimensions
LOA
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
LWL
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Beam
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Displacement
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Ballast
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Sail Area
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Performance
SA / Displacement
(higher = more powerful)
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Ballast / Disp
(higher = stiffer)
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Comfort Ratio
(higher = more comfortable offshore)
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Capsize Screening
(lower = safer)
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Displacement / Length
(lower = lighter)
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Hull Speed
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
Speed Number
(higher = faster)
Sun Odyssey 39I Jeanneau ★
First 407 Beneteau
King 40
Regatta 39 Jeanneau
Regatta 39 Mh Jeanneau
X 40
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