BoatsJ J/99

J J/99

Fractional Sloop · Fin w/bulb & Spade Rudder · First built 2019

A high-performance fractional sloop by Alan Johnstone, designed for competitive offshore racing and fast shorthanded sailing

Designed by Alan Johnstone.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/bulb & Spade Rudder

See her sail

The J J/99, 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.

LivelySea-kindly

Her light displacement on a moderate beam gives 18 — a quick, lively motion that feels every wave.

Comfort ratio 18
CoastalBluewater

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

Capsize screening 2.20
LightHeavy

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

Displacement / length 161
EasygoingPowered-up

22.2 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 22.2
TenderStiff

40% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 40%

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

  • Draws more than ~86% of boats her size on file

Compared with 2856 boats of the same type within a quarter of her length.

What the fleet has seen

The J J/99, as the fleet has seen it

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

The J J/99 is a fractional sloop designed by Alan Johnstone and built by J Boats, Composites, and J Boats from 2019 to the present, featuring a fin with bulb and spade rudder hull. It measures 9.94 m LOA, 3.41 m in beam, and 1.99 m in draft, displacing 3817 kg. The J/99 offers an optional twin rudder and an all-lead deep fin keel. Aboard SEILmagasinet, Petter Gustafsson transitioned to a J/99 for double-handed offshore racing, targeting events like the Fastnet Race and Baltic 600, noting its competitive performance under the IRC rating rule compared to his previous J/111.16:17 Gustafsson secured an overall victory in the Færderseilasen 2025 regatta by employing a tactical route down the center of the fjord, executing approximately 100 jibes to maximize wind pressure and overtake competitors.24:40 He emphasizes real-time visual observation of wind conditions over complex data analysis for race success.25:25 For safety, regatta requirements for races like Færderseilasen mandate equipment such as two buckets with lanyards, a waterproof first-aid kit, a foghorn, a manual compass, and conical wooden plugs for through-hull fittings.5:03 Personal safety gear includes life jackets with crotch straps, lights, and spray hoods, which require annual inspection.14:10

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

On the water

The J J/99 on video

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
39.8%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
22.2
Displacement / length
160.6
Comfort ratio
17.5
Capsize screening
2.20
Hull speed
7.2 kn
Pounds / inch immersion
1142
Hull
Hull type
Fin w/bulb & spade rudder
Construction
Balsa/foam composite with vinylester resin
Ballast type
Cast iron fin and integral lead wedge shoe
Production
Years built
First built 2019
Designer
Alan Johnstone
Builder
J, Boats, Composites

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.

Beneteau 32310.01 mSame hull familyNear-identical lengthA masthead sloop with a 1.45m draft and bulb keel, optimized for coastal cruising comfort since 2001
Feeling 329.95 mSame hull familyNear-identical lengthA high-performance fractional sloop from the Joubert-Nivelt studio, designed with a light displacement for spirited sailing
Dehler Yachts 329.93 mSame hull familyNear-identical lengthA Judel-Vrolijk fractional sloop designed for performance with a high sail area-to-displacement ratio and a stiff hull
Finn Flyer 32 CR9.85 mSame hull familyNear-identical lengthA performance-oriented fractional sloop by Eivind Still and Hans Johansson, featuring a high sail-area-to-displacement ratio
Beneteau Oceanis 3219.95 mSame hull familyNear-identical lengthA versatile cruiser from Groupe Finot, widely produced as the Moorings 321 and Stardust series for charter fleets
Contention 33 (Peterson)10.00 mSame hull familyNear-identical lengthA Doug Peterson-designed masthead sloop that proved its competitive pedigree with a 3rd place finish at the 1979 3/4 Ton Cup

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.

Keep asking

The fleet has more to say

Search what's been said about the J J/99, or ask a specific question — the answer comes back written out, with links to the moments it draws on.

The newsletter

New boats, new stories, from everywhere.

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

Report an issue