BoatsNeptun 29

Neptun 29

Masthead Sloop · Fin keel, spade rudder · 1967–1972

A slender, shallow-draft masthead sloop designed for coastal cruising with a narrow 2.5-meter beam

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/spade Rudder

See her sail

The Neptun 29, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from SEILmagasinet

Is it for you?

Character

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

Shoal draftDraws 0.80 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 narrow beam gives 19 — a quick, lively motion that feels every wave.

Comfort ratio 19
CoastalBluewater

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

Capsize screening 1.89
LightHeavy

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

Displacement / length 158
EasygoingPowered-up

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

Sail area / displacement 16.4
TenderStiff

23% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 23%

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

  • Draws less than ~98% of boats her size on file
  • Narrower than ~84% of boats her size on file

Compared with 2368 boats of the same type within a quarter of her length.

What the fleet has seen

The Neptun 29, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Neptun 29 is a masthead sloop sailboat built by Neptun Boote GmbH and Neptun Yachten GmbH between 1967 and 1972. It has a fin keel with a spade rudder, measures 8.9 meters LOA, 2.5 meters in beam, and displaces 2400 kg. A deep keel option increases the draft to 1.2 meters. The design features a lightweight construction and a simple rig, with a comfort ratio of 19.1.2:10 The boat's engine box is centrally located over the keel, which aids weight distribution but can limit salon space and increase noise.10:20

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen once across one channel of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
22.9%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.4
Displacement / length
158.5
Comfort ratio
19.1
Capsize screening
1.89
Hull speed
6.7 kn
Pounds / inch immersion
721
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Ballast type
Cast Iron
Production
Years built
1967–1972
Builder
Neptun Boote GmbH, Co. KG

Boats like this, on the water

More boats like her, on the water

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/29 FR8.99 mSame hull familyNear-identical lengthA 1982-1987 fractional sloop featuring a transom-hung rudder and a high 23.35 SA/displacement ratio for speed
HOW DO I FIX ALL THESE GELCOAT CRACKS FOR PAINTING??0:42from BoatworksToday
Com-Pac Yachts 27/29.02 mSame hull familyNear-identical lengthAn evolution of the original 27-foot hull, this masthead sloop features increased sail area for improved performance
Com-Pac Sailboats - Everything You Need to Know4:40from Practical Sailor
Jeanneau Aquila 278.70 mSame hull family0.2 m shorterA Philippe H. Harle-designed masthead sloop offered in both standard and deep-keel Regatta configurations
Sailing Savvy: How to Build a Winning Team with Jon Sverre Høiden12:45from SEILmagasinet
Sunbeam 298.95 mSame hull familyNear-identical lengthA Schoechl-designed masthead sloop with a high sail area-to-displacement ratio, built for performance over two decades
SEILmagasinet TV Episode 5-20243:44from SEILmagasinet
RM Yachts 8908.90 mSame hull familyNear-identical lengthA high-performance fractional sloop with a deep bulb keel and dual rudders, optimized for speed and stability
RM 890 - Fora Marine - Video Proof0:33from SVN solovelanet
Beneteau First 3009.05 mSame hull family0.2 m longerA Groupe Finot-designed fractional sloop with a high sail-area-to-displacement ratio built for spirited club racing
Beneteau First 300 - A Yacht Delivery from Conwy to Falmouth0:27from Halcyon Yachts - International Yacht Delivery

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.

Neptun 24A masthead sloop from the late sixties, featuring a fin keel and transom-hung rudder for coastal cruisingNeptun 26A lightweight 1970s cruiser with a 32% ballast ratio and a high sail-area-to-displacement profile for lively sailingNeptun 25-1A 7.6-meter fin-keel cruiser built from 1975 to 1983, balancing a stiff 32% ballast ratio with a lively sail planNeptun 31An IOR-rated 9.3-meter fin-keel sloop from the early seventies, designed with a 33% ballast ratio for coastal stabilityNeptun 32MSA 1975 masthead sloop with a fin keel, designed as a stable cruiser with a 42% ballast ratio

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