BoatsBianca Yachts 27

Bianca Yachts 27

Masthead Sloop · Long Keel w/trans. Hung Rudder · 1964–1975

The first series-produced Danish fiberglass yacht, this long-keeled masthead sloop offers a stable, traditional platform

Designed by Svend Aage Christensen.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Long Keel w/trans. Hung Rudder

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

LivelySea-kindly

Her heavy displacement on a narrow beam gives 31 — a sea-kindly motion in a seaway.

Comfort ratio 31
CoastalBluewater

At 1.66 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.66
LightHeavy

381 — very heavy for her waterline, a serious load-carrying cruiser.

Displacement / length 381
EasygoingPowered-up

13.8 — modest power for her weight; easygoing rather than lively, and happier with a breeze.

Sail area / displacement 13.8
TenderStiff

45% of her weight is ballast — stiff, standing up well to her sails.

Ballast 45%

Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.

  • Draws more than ~75% of boats her size on file

Compared with 305 boats of the same type within a quarter of her length.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Ballast / displacement
44.6%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
13.8
Displacement / length
380.7
Comfort ratio
31.0
Capsize screening
1.66
Hull speed
6.0 kn
Pounds / inch immersion
581
Hull
Hull type
Long keel w/trans. hung rudder
Construction
Fiberglass
Ballast type
Iron
Production
Years built
1964–1975
Units built
604
Designer
Svend Aage Christensen
Builder
Bianca A, S

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Cape Dory 278.25 mSame hull familyNear-identical lengthA 1977-1985 production masthead sloop featuring a 40% ballast ratio for stability in a traditional full-keel hull
Pacific Seacraft Dana 248.31 mSame hull familyNear-identical lengthA heavy-displacement W.I.B. Crealock cutter designed for offshore stability and serious coastal cruising
Pearson Yachts-USA Triton8.63 mSame hull family0.4 m longerA Carl Alberg-designed long-keel fractional sloop that pioneered fiberglass cruising and saw international production.
Alberg 309.22 mSame hull family1.0 m longerA 25-year production classic with a heavy displacement-to-length ratio that remains a capable choice for offshore passages
Cape Dory 288.56 mSame hull family0.3 m longerA classic Carl Alberg full-keel masthead sloop designed for steady, comfortable cruising
Cape Dory 30C9.21 mSame hull family1.0 m longerA cutter-rigged cruiser with a full keel and a 1.27-metre draft, built for steady performance between 1976 and 1987

The family

Related models

The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.

Keep looking

Nothing filmed of this one yet

Two ways to keep looking — both search what the fleet has actually recorded.

The newsletter

New boats, new stories, from everywhere.

One email from the fleet — boats newly added, videos newly analyzed. No noise.

Report an issue