BoatsBi-Loup 77

Bi-Loup 77

Masthead Sloop · Twin keels · 1985–1995

A 7.7-metre twin-keeler with a light 1,600kg displacement and a high sail-area-to-displacement ratio for lively coastal sailing

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Twin Keel

Is it for you?

Character

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

TrailerableBeam 2.50 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,600 kg of hull, so roughly 2,200 kg on a trailer: check that against your own towing rating.Shoal draughtDraws 0.85 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her light displacement on a moderate beam gives 13 — a quick, lively motion that feels every wave.

Comfort ratio 13
CoastalBluewater

2.16 — right around the 2.0 line, the edge between coastal and offshore.

Capsize screening 2.16
LightHeavy

106 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 106
EasygoingPowered-up

25.0 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 25.0
TenderStiff

41% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 41%

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

  • Draws less than ~94% of boats her size on file

Compared with 1593 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
40.6%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
25.0
Displacement / length
105.6
Comfort ratio
13.3
Capsize screening
2.16
Hull speed
6.7 kn
Pounds / inch immersion
721
Hull
Hull type
Twin Keel
Construction
Fiberglass
Ballast type
Other
Production
Years built
1985–1995
Units built
100
Designer
Wrighton
Builder
Wrighton Yachts

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.

J Boats Tillotson Pearson J/808.00 mSame hull family0.3 m longerA 1992 fractional sloop with a high 26.59 sail area-to-displacement ratio, engineered for rapid, agile performance
Sirius 7277.27 mSame hull family0.4 m shorterA development of the Sirius 24, this fractional sloop features a fin keel with skeg-mounted rudder for balanced handling
International 8068.06 mSame hull family0.4 m longerA Pelle Petterson-designed fractional sloop with a skeg-hung rudder, built for performance since 1974
Dehler Yachts 25CR7.50 mSame hull family0.2 m shorterA Van de Stadt-designed fractional sloop with a high sail area-to-displacement ratio built for spirited performance
Abbott Boats Inc. Soling8.15 mSame hull family0.5 m longerA high-performance Olympic class keelboat designed by Jan Herman Linge for tactical three-person racing
J Boats Tillotson Pearson J/247.32 mSame hull family0.4 m shorterA legendary Rodney Johnstone design that defined the modern one-design racer with its high sail-area-to-displacement ratio

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

Keep looking

Nothing filmed of this one yet

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

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