BoatsBlock Island 40

Block Island 40

Masthead Yawl · Keel/centreboard · First built 1957

One of the earliest production fibreglass boats of its size, this keel-centerboard yawl debuted in 1957

Designed by William H. Tripp Jr, built by Beetle Boat Co.

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.

Shoal draughtDraws 1.19 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her heavy displacement on a narrow beam gives 39 — a sea-kindly motion in a seaway.

Comfort ratio 39
CoastalBluewater

1.71 — just under the 2.0 offshore line; her beam is modest for her weight.

Capsize screening 1.71
LightHeavy

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

Displacement / length 451
EasygoingPowered-up

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

Sail area / displacement 13.7
TenderStiff

24% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 24%

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

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
23.8%
Rig & sail area
Rig
Masthead Yawl
Ratios
SA / displacement
13.7
Displacement / length
450.8
Comfort ratio
39.0
Capsize screening
1.71
Hull speed
7.0 kn
Pounds / inch immersion
1155
Hull
Hull type
Keel/Cbrd.
Construction
Fiberglass
Production
Years built
First built 1957
Designer
William H. Tripp Jr
Builder
Beetle Boat Co, American Boat Building

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.

Pearson Yachts 4012.17 mSame hull familyNear-identical lengthA 12-metre masthead sloop with a deep 2.87-metre draft and high ballast ratio, built for stability and speed
Bristol Yachts 41.112.54 mSame hull family0.4 m longerA masthead sloop with a deep 3.05-metre keel-centreboard draft, bridging the gap between the 411 and 43.3 models
Pearson Yachts 3510.67 mSame hull family1.5 m shorterBoasting the longest production run of any Pearson model, this keel/centerboard sloop remained largely unchanged for 14 years
Brewer 4413.41 mSame hull family1.2 m longerA stretched evolution of the 12.8 featuring a reverse transom and a versatile keel-centerboard configuration
Ovni 37011.95 mSame hull family0.2 m shorterA modern lifting-keel cruiser with a versatile Solent rig, designed for shallow-water access and offshore capability
Ovni 4012.60 mSame hull family0.4 m longerA 12.6-metre cutter with a high 25.21 sail-area-to-displacement ratio, built for agile performance during her 1984-1987

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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