BoatsUS One-Design

US One-Design

Fractional Sloop · Fin Keel · 1946–1948

A narrow-beamed fractional sloop designed by Carl Alberg at Alden Associates, built for competitive one-design racing

Designed by Alden Associates & Carl Alberg, built by Quincy Adams Yachts Yard.

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

Is it for you?

Character

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

LivelySea-kindly

Her moderate displacement on a narrow beam gives 27 — a moderate, middle-of-the-road motion.

Comfort ratio 27
CoastalBluewater

At 1.50 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.50
LightHeavy

210 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 210
EasygoingPowered-up

17.4 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 17.4
TenderStiff

55% of her weight is ballast — very stiff, carrying full sail in a blow.

Ballast 55%

A balanced, easily-driven cruiser — comfortable and forgiving for coastal work.

  • Lighter than ~95% of boats her size on file
  • Draws less than ~79% of boats her size on file
  • Narrower than ~99% of boats her size on file

Compared with 2906 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
55.4%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
17.4
Displacement / length
209.9
Comfort ratio
26.7
Capsize screening
1.50
Hull speed
6.6 kn
Pounds / inch immersion
600
Hull
Hull type
Fin Keel
Construction
Wood
Production
Years built
1946–1948
Units built
30
Designer
Alden Associates, Carl Alberg
Builder
Quincy Adams Yachts Yard

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.

Beneteau Idylle 115011.50 mSame hull familyNear-identical lengthA shoal-draft cruiser with a 1.33-metre keel, designed by Jean Berret for comfortable coastal passage-making
Ericson Yachts 3811.48 mSame hull familyNear-identical lengthA Bruce King-designed masthead sloop with a high sail area-to-displacement ratio for spirited performance
Hunter Marine 37611.35 mSame hull family0.2 m shorterA spacious cruiser featuring a B&R rig and wing keel, sharing a proven hull design with the later 380 and 386 models
Bavaria Yachts 3611.55 mSame hull familyNear-identical lengthA 1998-2000 production cruiser featuring a high 21.12 sail area-to-displacement ratio for its 11.55-meter hull
Bavaria Yachts 3711.55 mSame hull familyNear-identical lengthA short-lived production model from 2000-2001, formerly marketed as the Bavaria 36, featuring a masthead sloop rig
Etap 38i11.57 mSame hull familyNear-identical lengthA masthead sloop featuring a shallow-draft wing keel, designed for stable cruising and built between 1989 and 1997

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.

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Nothing filmed of this one yet

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