Design and Construction
The Gecco 39 was designed by maritime architect Magnus Öster and is built by Gecco Marin, with the model dated to 1998. The hull carries a ballast ratio of 47% and a Displacement Length Ratio of 301, figures that describe a vessel with substantial heft relative to its waterline. Its Length Beam Ratio of 3.39 is moderate, neither pencil-slim nor barge-wide, and the wet bottom surface area of about 38 square meters (409 square feet) gives a sense of the hull's immersed footprint. The boat can only enter major marinas as the draft is about 2.05 to 2.15 meters (6.73 to 7.03 feet) dependent on the load, a constraint that shapes where she can lie alongside.
Rig and Handling
The Gecco 39 is built with a masthead rig, and the documented standing and running rigging lengths are unusually complete. Mainsail, jib/genoa, and spinnaker halyards are each estimated at 35.9 meters (117.9 feet) with a 12 mm (1/2 inch) diameter, while sheets run shorter and thicker: the jib and genoa sheets are 11.9 meters (39.2 feet) at 14 mm (0.55 inch), the mainsheet 29.9 meters (98.0 feet) at 14 mm, and the spinnaker sheet 26.3 meters (86.3 feet) at 14 mm. Smaller controls follow suit, with the cunningham at 3.8 meters (12.5 feet), and both kickingstrap and clew-outhaul at 7.6 meters (24.9 feet), all 12 mm. The SA/D with the ISO 8666 reference sail is 15.1, rising to 18.2 with a 135% genoa, and the Relative Speed Performance is logged as 38. The theoretical maximal speed of a displacement boat of this length is 7.3 knots, and the capsize screening value is 1.75. Her immersion rate of about 214 kg/cm (1201 lbs/inch) rounds out the performance envelope on paper.
Accommodations
No documented accommodation plan, interior volume description, or layout detail appears in the available record for the Gecco 39. The known specifications stop at exterior hull and rig dimensions, leaving the belowdecks arrangement outside the scope of verified fact.
Known Issues
The source material contains no documented defects, structural weaknesses, or recurring faults for the Gecco 39. Without reported drainage paths, flooding concerns, or quantified wear measurements, there is nothing in the record to flag as a known issue.
Refits and Ownership
No refit guidance, owner-reported upgrade patterns, or maintenance notes are recorded for this model. The rigging table offers precise replacement lengths for halyards and sheets, which is useful for planning line renewals, but no broader ownership-cost or upgrade narrative is documented.
The Verdict
The Gecco 39 presents as a documented 1998 Magnus Öster design from Gecco Marin: a masthead-rigged fin-keel sloop with moderate-displacement proportions and a draft that limits her to major marinas. The available data is rich on rig dimensions and ratio-based performance indices but silent on interior and ownership realities.
Pros
- Documented ballast ratio of 47% and DL-ratio of 301 indicate a substantial, settled cruiser hull.
- Complete rigging length and diameter table simplifies line replacement planning.
- Motion Comfort Ratio of 31.9 to 33.0 suggests a tolerable motion profile for a boat of this size.
Cons
- Draft of 2.05 to 2.15 meters restricts anchoring and marina access to deeper ports.
- No documented accommodation, known-issue, or refit information available for buyer evaluation.
