Joemarin 34
Masthead Sloop · Fin With Rudder On Skeg · First built 1973
A 1973 Hans Groop design featuring a fin keel and skeg-mounted rudder for balanced, steady coastal cruising
Designed by Hans Groop.
- LOA
- Beam
- Draft (max)
- Displacement
- Ballast
- Hull type
- Fin With Rudder On Skeg
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
LivelyComfort 27Sea-kindly
CoastalCapsize 1.81Bluewater
LightD/L 227Heavy
EasygoingSA/D 16.2Powered-up
TenderBallast 51%Stiff
A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.
- Draws less than ~83% of boats her size on file
Compared with 2959 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
51.4%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.2
Displacement / length
227.3
Comfort ratio
27.3
Capsize screening
1.81
Hull speed
7.2 kn
Pounds / inch immersion
1058
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1973
Designer
Hans Groop
Builder
Joemarin OY
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.
Moody 34610.52 mSame hull familyNear-identical lengthA 10.5-metre masthead sloop with a 40% ballast ratio, offering a stable and comfortable platform for coastal cruising
Contessa 3510.82 mSame hull family0.4 m longerA Doug Peterson-designed IOR One Ton racer that claimed the 1974 International One Ton Cup with her prototype Gumboots
Tartan Marine 34-210.49 mSame hull familyNear-identical lengthA Sparkman & Stephens masthead sloop featuring an extended stern and refined interior based on the Tartan 33R
Seidelmann Yachts 3410.36 mSame hull familyNear-identical lengthA 1981 masthead sloop with a 45% ballast ratio, balancing a light-displacement hull with a deep 1.65-metre fin keel
Beneteau Oceanis 34.110.77 mSame hull family0.4 m longerA Marc Lombard-designed cruiser featuring a hull with dual rudders and multiple keel options for versatile performance
Catalina Yachts 35010.80 mSame hull family0.4 m longerA masthead sloop with a 2.03-metre draft and a high-volume hull designed for comfortable coastal cruising
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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