BoatsSeidelmann Yachts 34

Seidelmann Yachts 34

Masthead Sloop · Fin keel, spade rudder · First built 1981

A 1981 masthead sloop with a 45% ballast ratio, balancing a light-displacement hull with a deep 1.65-meter fin keel

Designed by J. Robert Seidelmann.

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

See her sail

The Seidelmann Yachts 34, on the water

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

Footage from Eternal Sailing

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 moderate beam gives 22 — a moderate, middle-of-the-road motion.

Comfort ratio 22
CoastalBluewater

2.13 — right around the 2.0 line, the edge between coastal and offshore.

Capsize screening 2.13
LightHeavy

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

Displacement / length 264
EasygoingPowered-up

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

Sail area / displacement 16.8
TenderStiff

45% of her weight is ballast — stiff, standing up well to her sails.

Ballast 45%

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

What the fleet has seen

The Seidelmann Yachts 34, as the fleet has seen it

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

The Seidelmann Yachts 34 is a masthead sloop designed by J. Robert Seidelmann, built from 1981 to the present, with a fin keel and spade rudder. It measures 10.4 meters LOA, has a 3.6-meter beam, a 1.6-meter draft, and displaces 4989 kg. Aboard *Eternal Sailing*, Matthias and Luisa owned a 34-foot monohull named *Wanderling*. *Blue Horizon* mentioned that Matti and Luisa were selling their 1984 Settler 34, *Wanderling*, which was located near New York and equipped for long-distance cruising with an autopilot, windvane, radar, and AIS.watch The owners intended to transition to a different vessel for future plans in the Mediterranean.15:24

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen 4 times across 2 channels of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The Seidelmann Yachts 34 on video

What they go for

Market signal

Where the fleet has seen this model come up for sale.

2seen for sale
1seen sold

For sale

  • Friends are selling their 1984 Settler 34, Wanderling, in the New York area to transition to a different vessel in the Mediterranean

    from Blue Horizonseen August 2024watch

  • The owners are considering selling their current boat, Wanderling, to finance the new catamaran

    from Eternal Sailingseen March 2025watch

Sold

From the fleet's own footage — our observed signal, not broker listings.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
45.5%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.8
Displacement / length
263.9
Comfort ratio
22.0
Capsize screening
2.13
Hull speed
6.9 kn
Pounds / inch immersion
1119
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Production
Years built
First built 1981
Designer
J. Robert Seidelmann
Builder
Seidelmann Yachts

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.

Sabre Yachts 3410.42 mSame hull familyNear-identical lengthProduced from 1976 to 1985, this fin-keeled masthead sloop offers a balanced 40% ballast ratio for coastal stability
Into The Chesapeake with a Rainbow On Our Backs - Episode 327 - Journey of a Wooden Boat19:50from Acorn To Arabella
Victoria Marine 3410.44 mSame hull familyNear-identical lengthA versatile cruiser available as a masthead sloop or cutter, featuring a shallow 1.47m draft and a skeg-hung rudder
Episode 3 - Rachael Sprot15:24from SheHelms Sailing
Hunter Marine 34010.29 mSame hull familyNear-identical lengthA B&R rigged cruiser featuring a shoal-draft fin keel and spade rudder, designed for stable and efficient coastal sailing
Why Are Sailboats So Cheap?3:09from Practical Sailor
Seafarer Yachts 3410.29 mSame hull familyNear-identical lengthA versatile masthead sloop offered with yawl or keel-centerboard configurations and optional diesel power
We are sailing through the lonely islands of the Bahamas.. ❤️ | Ep.660:30from Eternal Sailing
Formosa 3410.36 mSame hull familyNear-identical lengthA 1975 masthead sloop featuring a skeg-hung rudder and a displacement-to-ballast ratio built for stable, comfortable cruising
Why are sailboats an eco-friendly way to live? | #SAL #2839:28from Hashtag Sal
X-Yachts X-3410.36 mSame hull familyNear-identical lengthA Niels Jeppesen-designed fractional sloop balancing performance and comfort with a stiff, bulb-keeled hull
Sailing Insights: Sigmund Hertzberg on the Massive Success of Race to the Arctic3:10from SEILmagasinet

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.

Seidelmann Yachts 37A light-displacement masthead sloop designed for performance with a high sail-area-to-displacement ratioSeidelmann Yachts 30-TA 30-foot masthead sloop with a 1.65-meter draft, optimized for stability with a 40% ballast ratioSeidelmann Yachts 25A masthead sloop designed by J. Robert Seidelmann, featuring a fin keel and spade rudder for balanced coastal cruisingSeidelmann Yachts 299A 9.12-metre fin-keel sloop built from 1979 to 1981, offering a balanced 2.2 capsize screening for coastal passagesSeidelmann Yachts 295A masthead sloop with a centerboard keel designed by J. Robert Seidelmann for versatile shoal and deep water sailingSeidelmann 30A maxi MORC centerboard design from 1977 featuring a spacious 3.66-meter beam and a custom interior by Stott Carleton

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