Compromis 850 Information, Review, Specs

Make
Compromis
Model
850
Builder
Zaadnoordijk
Designer
Frans Maas
Number Built
100
Production Year(s)
1974 - 1980

The Compromis 850, a hallmark of Dutch naval architecture from the Zaadnoordijk Watersport yard, represents a transition era in family cruising where safety and interior volume began to take precedence over raw racing performance. Designed by the prolific Frans Maas, the 850 was introduced in the late 1970s as a robust, middle-distance cruiser capable of handling the choppy conditions of the North Sea and the IJsselmeer. The design philosophy centers on a high-ballast ratio and a deep, protected cockpit, making it a frequent choice for coastal sailors who value a "ship-like" feel in a vessel under nine meters. While the yard eventually rebranded its higher-end line as C-Yacht, the Compromis 850 remains one of their most successful production runs, lauded for a build quality that often exceeds contemporary mass-production standards.

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Sailing Performance & Handling

The sailing characteristics of the Compromis 850 are defined by its conservative hull form and substantial displacement. With a weight of approximately 3,000 kg and a significant portion of that dedicated to the keel, the boat exhibits a high degree of stiffness. It is a "stiff" sailer that stands up well to its canvas, rarely requiring a reef before a True Wind Speed of 18 knots. However, the trade-off for this stability is a lower sail area-to-displacement ratio compared to modern performance cruisers; in light airs, the 850 can feel sluggish and requires a clean hull and well-trimmed genoa to maintain momentum.

The boat’s tracking is aided by a semi-long keel and a skeg-hung rudder, a configuration that provides excellent directional stability. According to technical assessments often cited by the C-Yacht/Zaadnoordijk yard, the 850 was engineered to be forgiving for short-handed crews. The steering is typically heavy enough to provide feedback without being taxing, though the boat does exhibit notable weather helm if over-canvased. Owners frequently report that the 850 excels on a reach, where its hull shape settles into a predictable groove, though its upwind tacking angles are wider than those of its more slender competitors from the same era.

Interior Comfort & Variations

For a boat of 8.5 meters, the Compromis 850 offers an interior volume that was considered revolutionary at its launch. The beam is carried well aft, allowing for a layout that feels significantly larger than its footprint. The standard configuration features a V-berth forward, a central salon with a folding table, and a functional galley. One of the 850’s standout features is its headroom, which nears 1.90 meters in the main cabin—a rarity for a boat of this length.

The build quality is evident in the extensive use of teak joinery and the integration of the inner liner, which provides both thermal insulation and structural rigidity. While the 850 remained largely consistent during its production run, it paved the way for its "sibling" models, most notably the Compromis 777 and the larger Compromis 888. The 888 effectively replaced the 850, offering a more modern aft-cabin layout. In contrast, the 850's quarter berth is somewhat tighter but serves as an excellent sea berth or storage area. The materials used by Zaadnoordijk were chosen for longevity; even older 850 models often retain the structural integrity of their bulkheads and cabinetry, provided they haven't suffered from neglected deck leaks.

Known Issues & Buyer’s Checklist

Prospective buyers should focus on several specific technical areas inherent to Dutch builds of this vintage. While the hull is solid GRP, the deck is a sandwich construction that can suffer from delamination if hardware has not been re-bedded.

  1. Grid/Frame Integrity: Inspect the glasswork around the keel bolts. While the 850 is stout, the internal grid that distributes mast and keel loads should be checked for "spiderweb" cracking or separation from the hull, often a sign of a hard grounding.
  2. Engine Cooling: Many 850s were originally fitted with Yanmar or Bukh diesel engines. While reliable, the original exhaust elbows and raw-water cooling passages are prone to scale buildup, which can lead to overheating under heavy load.
  3. Rudder Bushings: The skeg-hung rudder is a safety feature, but the bushings at the top and bottom of the post can wear over decades, leading to a "knocking" sensation in the tiller or wheel.
  4. Window Seals: The aluminum-framed windows are known to leak over time. Check the interior woodwork beneath the ports for dark staining or soft spots, which indicate long-term water ingress.

Community & Resources

The Compromis 850 enjoys a dedicated following, particularly in Northern Europe. The most prominent organization is the Compromis Club, an owner-led association that maintains a deep repository of technical manuals, original brochures, and sail plans. This community is an essential resource for sourcing specific replacement parts, such as the proprietary rubbing strake or original window gaskets, which are no longer in standard production.

The Verdict

The Compromis 850 is a quintessential "pocket cruiser" for the sailor who prioritizes safety and living space over regatta trophies. It is a predictable, sturdy vessel that offers a sense of security in heavy weather that few 28-footers can match.

Pros:

  • Exceptional build quality and structural longevity.
  • High interior headroom and volume for its size.
  • Predictable and stable handling in heavy seas.
  • Strong owner association support.

Cons:

  • Sluggish performance in light winds (under 10 knots).
  • Limited maneuverability in tight marinas due to the keel/rudder configuration.
  • Dated aft-cabin ergonomics compared to its successor, the 888.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
2756 lbs
Displacement
6614 lbs
Water Capacity
28 gal
Fuel Capacity
8 gal

Dimensions

Length Overall (LOA)
28.05 ft
Waterline Length (LWL)
25.92 ft
Beam
10.01 ft
Draft
4.27 ft
Max Headroom
-
Air Draft
32.81 ft
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

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

Calculations

Sail Area / Displacement (SA/D) Ratio
15.15
Ballast / Displacement Ratio
41.67
Displacement / Length Ratio (D/L) Ratio
169.56
Comfort Ratio
17.9
Capsize Screening Formula
2.13
Hull Speed
6.82 kn