BoatsZephyr 36 (Alden)

Zephyr 36 (Alden)

Masthead Sloop · Keel/centreboard · 1960–1963

A keel-centerboard masthead sloop with hulls molded by Halmatic and finished by LeComte for versatile deep-water sailing

Designed by John G. Alden, built by Halmatic Ltd.

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 33 — a sea-kindly motion in a seaway.

Comfort ratio 33
CoastalBluewater

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

Capsize screening 1.75
LightHeavy

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

Displacement / length 400
EasygoingPowered-up

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

Sail area / displacement 16.3
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
24.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.3
Displacement / length
400.0
Comfort ratio
33.3
Capsize screening
1.75
Hull speed
6.7 kn
Pounds / inch immersion
938
Hull
Hull type
Keel/Cbrd.
Construction
Fiberglass
Production
Years built
1960–1963
Units built
10
Designer
John G. Alden
Builder
Halmatic Ltd

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.

Allied Boat Co. Inc. Seabreeze 3510.52 mSame hull family0.6 m shorterA MacLear and Harris-designed masthead sloop featuring a versatile keel-centerboard configuration for shoal-draft cruising
Pearson Yachts 3510.67 mSame hull family0.4 m shorterBoasting the longest production run of any Pearson model, this keel/centerboard sloop remained largely unchanged for 14 years
Southerly 329.97 mSame hull family1.1 m shorterA Stephen Jones-designed fractional sloop with a swing keel, built for versatile shoal-draft access since 2007
Tartan Marine 34 C10.49 mSame hull family0.6 m shorterA Sparkman & Stephens masthead sloop featuring a keel-centerboard hull designed for shoal water and IOR competition
Southerly 35RS10.82 mSame hull family0.3 m shorterA Rob Humphreys-designed swing keel cruiser built for shoal water access with a versatile fractional rig
Southerly 11010.82 mSame hull family0.3 m shorterA Rob Humphreys-designed fractional sloop with a swing keel that allows for shallow-water exploration and drying out

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.

The newsletter

New boats, new stories. Every week, everywhere.

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

Report an issue