The Diamant 3000, built by Ott Yacht GmbH in Meersburg, Germany, represents a refined evolution of the Scandinavian performance cruiser ethos. Originally designed by the renowned Danish naval architect Jan Kjaerulff, the vessel is a direct descendant of the Dynamic 3000. It occupies a unique space in the European market as a sleek, narrow-beam "rennyacht" (racing yacht) that retains enough civility for fast coastal cruising. Characterized by its elegant, low-profile silhouette and a high-aspect fractional rig, the Diamant 3000 is engineered for sailors who prioritize helm sensitivity and aerodynamic efficiency over cavernous interior volume.
Diamant 3000 Information, Review, Specs

- Make
- Diamant
- Model
- 3000
- Builder
- Ott Yacht GmbH
- Designer
- Jan Kjaerulff
- Number Built
- 50
- Production Year(s)
- 1988 - 1998
Sailing Performance & Handling
The Diamant 3000 is widely recognized for its "sporty and fast" nature, as noted by the manufacturer Ott Yacht. With a displacement of approximately 2,300 kg and a generous sail area, it exhibits a high power-to-weight ratio. The hull is optimized for upwind performance, benefitting from a slender 2.50-meter beam that minimizes drag and allows the boat to point exceptionally high.
Interpretations of its technical profile suggest a boat that remains balanced even in freshening conditions, though its narrow form factor requires active weight management from the crew to maintain an optimal heel angle. The deep T-keel (1.75m) provides significant righting moment, allowing the 7/8 fractional rig to be pushed hard in competitive settings. On the helm, the boat is reported to be highly responsive, providing the tactile feedback typical of a high-performance dinghy but with the stability of a fixed-keel yacht.
Interior Comfort & Variations
Despite its slender exterior, the interior is surprisingly functional for weekend excursions. The layout typically features four berths—a double V-berth forward and two long settees in the salon—making it a viable platform for small families or racing crews. While headroom is restricted compared to beamier mass-market cruisers, the use of light woods and white GRP surfaces prevents a cramped atmosphere.
Ott Yacht has produced several variations based on this design philosophy. The sibling Diamant 2000 offers a more stripped-back, day-sailer experience, whereas the newer Diamant*** (Diamant Star) serves as the modern flagship successor. The "Star" version introduces updated cockpit ergonomics and refined interior appointments, reflecting Ott Yacht’s commitment to incremental refinement of the original Kjaerulff lines.
Popular Mentions & Media
The Diamant 3000 maintains a strong presence in Central European sailing media, particularly in German-speaking regions. It is a frequent subject of performance reviews in "Yacht" magazine, where it is often lauded for its "timeless elegance" and construction quality. The model is a staple of Lake Constance (Bodensee) racing circles, where it is frequently highlighted for its dominance in light-to-medium air regattas. While it lacks the global "blue-water" media footprint of heavier cruisers, its reputation as a "gentleman’s racer" is well-established in the European one-design community.
Known Issues & Buyer’s Checklist
Synthesizing reports from owner discussions and technical reviews, potential buyers should focus on the following high-signal areas:
- Rudder Bearings: Due to the high-performance nature of the boat and the loads placed on the deep spade rudder, buyers should check for excessive play or stiffness in the self-aligning bearings.
- Keel-Hull Joint: The deep T-keel exerts substantial leverage on the hull structure. It is critical to inspect the internal grid and keel bolts for any signs of stress cracking or movement, particularly if the boat has been raced heavily.
- Rig Tension & Deck Compression: As a fractional rig with swept-back spreaders, the mast setup is critical. Look for evidence of deck compression near the mast step or movement in the chainplates.
- Toe Rail Seals: Some older models may exhibit minor leaks at the hull-to-deck joint or through the toe rail fasteners if they have not been re-bedded.
Community & Resources
The primary hub for technical data and support is Ott Yacht GmbH, which continues to provide spare parts and factory service for the model. Owners also find community through Lake Constance sailing clubs, such as the Württembergischer Yacht-Club, where Diamant fleets remain active in competitive circuits. Technical specifications and original design lineage are often preserved through the International Aphrodite 101 Association, as the boats share a similar design pedigree and manufacturing stable.
The Verdict
The Diamant 3000 is a specialist’s boat, rewarding the skilled sailor with blistering performance and aesthetic grace while sacrificing the "condo-on-the-water" amenities of modern production cruisers.
Pros:
- Exceptional light-air performance and upwind pointing ability.
- High-quality German construction using isophtalic resins.
- Elegant, timeless design that stands out in a crowded marina.
- Strong resale value within the European racing community.
Cons:
- Limited headroom and narrow interior living space.
- Requires active sail trimming and weight management to handle effectively.
- Deep draft may limit access to shallower coastal cruising grounds.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Bulb
- Rudder
- 1x Spade
- Ballast
- 1984 lbs (Lead)
- Displacement
- 6173 lbs
- Water Capacity
- -
- Fuel Capacity
- 8 gal
Dimensions
- Length Overall (LOA)
- 34.09 ft
- Waterline Length (LWL)
- 27.23 ft
- Beam
- 8.2 ft
- Draft
- 5.41 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 45.93 ft
- E (Main Foot)
- 14.6 ft
- I (Foretriangle Height)
- 39.37 ft
- J (Foretriangle Base)
- 11.98 ft
- Forestay Length (est)
- 41.15 ft
- Sail Area
- 495 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 23.53
- Ballast / Displacement Ratio
- 32.14
- Displacement / Length Ratio (D/L) Ratio
- 136.49
- Comfort Ratio
- 19.75
- Capsize Screening Formula
- 1.79
- Hull Speed
- 6.99 kn