BoatsGrampian Marine 46

Grampian Marine 46

Masthead Yawl · Keel/centreboard · 1969–1976

A William Tripp-designed masthead yawl featuring a keel-centerboard configuration and a unique tandem centerboard option

Designed by William H. Tripp Jr.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Keel/Cbrd.

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 38 — a sea-kindly motion in a seaway.

Comfort ratio 38
CoastalBluewater

At 1.64 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.64
LightHeavy

311 — heavy for her waterline, built to carry stores and ride steadily.

Displacement / length 311
EasygoingPowered-up

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

Sail area / displacement 14.0
TenderStiff

36% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 36%

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

  • Draws more than ~80% of boats her size on file

Compared with 220 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
36.0%
Rig & sail area
Rig
Masthead Yawl
Ratios
SA / displacement
14.0
Displacement / length
310.6
Comfort ratio
38.3
Capsize screening
1.64
Hull speed
7.7 kn
Pounds / inch immersion
1415
Hull
Hull type
Keel/Cbrd.
Construction
Fiberglass
Ballast type
Lead
Production
Years built
1969–1976
Units built
12
Designer
William H. Tripp Jr
Builder
Grampian Marine

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.

Bristol Yachts 41.112.54 mSame hull family1.5 m shorterA masthead sloop with a deep 3.05-metre keel-centerboard draft, bridging the gap between the 411 and 43.3 models
Pearson Yachts 4012.17 mSame hull family1.9 m shorterA 12-meter masthead sloop with a deep 2.87-meter draft and high ballast ratio, built for stability and speed
Brewer 4413.41 mSame hull family0.6 m shorterA stretched evolution of the 12.8 featuring a reverse transom and a versatile keel-centerboard configuration
Southerly 42012.86 mSame hull family1.2 m shorterA Rob Humphreys-designed fractional sloop featuring a versatile swing keel that later evolved into the Southerly 430
Little Harbor 4413.51 mSame hull family0.5 m shorterA 13.5-metre cruiser with a 39.72 comfort ratio, built since 1983 for stable, heavy-displacement passage making
Ovni 43512.90 mSame hull family1.1 m shorterA 12.9-metre aluminum cutter with a lifting keel, optimized for offshore stability and shoal-water exploration

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.

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