Bianca 27 Information, Review, Specs

Bianca 27 Drawing
Make
Bianca
Model
27
Builder
Bianca A/S
Designer
Svend Aage Christensen
Number Built
604
Production Year(s)
1964 - 1975

The Bianca 27 is a seminal figure in European yachting history, representing one of the first successful transitions from traditional timber construction to series-produced glass-reinforced plastic (GRP). Designed by Svend Aage Christensen and launched in 1964 by Bianca Yachts in Rudkøbing, Denmark, the vessel was conceived as a seaworthy, long-keeled cruiser capable of offshore passages while remaining accessible to the burgeoning middle-class sailing market. Over a production run that spanned more than a decade, approximately 530 hulls were completed. As noted by the manufacturer in their official history, the Bianca 27’s success laid the foundation for the Danish boat-building industry, establishing a reputation for robust construction and elegant, Scandinavian lines that persist in the brokerage market today.

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Sailing Performance & Handling

The Bianca 27 is defined by its traditional long keel and heavy displacement, characteristics that prioritize stability and directional tracking over raw speed or agility. With a displacement of approximately 3,300 kg (7,275 lbs) and a high ballast ratio, the boat exhibits a "big boat" feel, remaining remarkably composed in heavy weather. According to editorial testing by Yachting Monthly, the hull’s deep sections and encapsulated lead ballast provide a stiff, sea-kindly motion that minimizes slamming in a head sea.

However, the technical trade-offs of this design are evident in light air. With a relatively modest sail area-to-displacement ratio, the Bianca 27 requires a stiff breeze to "wake up" and can feel sluggish in winds under 10 knots. The long keel ensures excellent tracking—allowing the helm to be left lashed for short periods—but results in a large turning circle, making tight maneuvers under power in a crowded marina challenging. While it is not a performance racer, its ability to maintain a steady course in a gale has made it a favorite for solo sailors and those prioritizing safety over VMG (Velocity Made Good).

Interior Comfort & Variations

For a 27-foot yacht designed in the mid-1960s, the Bianca 27 offers a functional and surprisingly warm interior, characterized by extensive use of mahogany and teak. The layout is a classic four-berth configuration: a V-berth in the forepeak, a compact head (marine toilet) and hanging locker separating the cabins, and two longitudinal settees in the saloon that double as sea berths. The galley is typically split across the companionway, featuring a small stove and sink.

There are two primary iterations of the design, often referred to as the MK I and MK II. The earlier models featured a shorter mast and a slightly different interior arrangement with less emphasis on headroom. The later MK II (produced after 1968) introduced a taller rig to improve light-air performance and minor refinements to the cabin moldings to maximize storage. Despite its modest beam of 2.44 meters (8 feet), the cabin feels secure and "salty," though modern sailors may find the lack of a dedicated aft cabin or standing headroom (approximately 1.80m) restrictive for extended live-aboard use.

The Bianca 27 enjoys a cult-like status in Northern Europe, particularly in Denmark and Germany, where it is frequently cited as the quintessential "pocket cruiser." Its reputation for durability was cemented by numerous long-distance voyages; several Bianca 27s have completed circumnavigations or crossed the Atlantic, proving that a sub-30-foot boat can be a legitimate blue-water vessel. The model's 50th anniversary in 2014 saw a massive gathering of the fleet in its home port of Rudkøbing, an event covered extensively by the Danish maritime press as a testament to the design's longevity.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Bianca 27 with an awareness of its age, focusing on the following technical areas:

  • Osmosis: Early GRP layups were thick but often lacked modern vinylester resins. Many hulls have undergone epoxy treatments, but a moisture meter check is essential.
  • Rudder Pintles and Bushings: The rudder is attached to the trailing edge of the long keel. Over decades, the pintles can wear, leading to vibration or "play" in the helm.
  • Chainplates and Bulkheads: Check the structural integrity of the bulkheads where the shroud chainplates are bolted. Leaking deck seals can lead to rot in the plywood core of the bulkheads, compromising rig tension.
  • Engine Replacement: Many original units were Bukh or Volvo Penta diesels. Due to the tight engine compartment, a replacement with a modern Yanmar or Beta engine is a common but expensive upgrade that significantly adds to the boat's value.
  • Deck Delamination: Like many boats of this era, the deck may use a balsa or foam core. "Soft spots" around the mast step or stanchion bases indicate water ingress and core rot.

Community & Resources

The boat is supported by a dedicated owner base, most notably the Bianca 27 Association (Klubben), which maintains an extensive technical archive including original drawings, tuning guides, and a register of surviving hulls. This community is an invaluable resource for sourcing specific replacement parts or advice on structural repairs.

The Verdict

The Bianca 27 is a timeless classic that offers entry-level sailors a robust, seaworthy platform capable of more than just coastal hopping. While it lacks the interior volume and light-wind speed of modern fin-keel designs, its aesthetic appeal and legendary "indestructibility" make it a premier choice for traditionalists.

Pros:

  • Exceptional seaworthiness and heavy-weather handling.
  • Classic Scandinavian aesthetics and high-quality woodwork.
  • Strong, encapsulated long keel with no keel bolts to fail.
  • Highly active and supportive international owners' association.

Cons:

  • Slow performance in light winds and poor tacking angles compared to modern hulls.
  • Difficult to maneuver in reverse due to the long keel design.
  • Limited headroom and interior volume for larger crews.
  • Potential for high maintenance costs related to aging GRP and original engines.

Measurements

Construction & Hull

Construction Material
Fiberglass (PVC Foam Core)
Hull Type
Monohull Sailboat
Keel Type
Full
Rudder
1x Transom-Hung
Ballast
3197 lbs (Iron)
Displacement
7165 lbs
Water Capacity
16 gal
Fuel Capacity
10 gal

Dimensions

Length Overall (LOA)
27.08 ft
Waterline Length (LWL)
20.33 ft
Beam
8 ft
Draft
4.58 ft
Max Headroom
5.97 ft
Air Draft
-
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
320 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
13.77
Ballast / Displacement Ratio
44.62
Displacement / Length Ratio (D/L) Ratio
380.68
Comfort Ratio
31.03
Capsize Screening Formula
1.66
Hull Speed
6.04 kn