MACI
Class CDisplacementCruiser/Racer

MACI — GER 8015

Model: J/99

J/BoatsRod Johnstone

Updated

MACI (GER 8015) is a J/99 designed by Rod Johnstone and built by J/Boats. She has been racing since 2026. She sails with a deeper keel than most J/99s. Against a typical J/99 she is quicker on a beam reach.

MACI GER 8015 - Rod Johnstone - J/Boats

Racing record

92

Race Edge

J/99: 84

550.3s/mile

Rating 2026

Race Edge by wind strength: how much she delivers beyond her rating, compared with the other boats in her class.

Under 10 kn93
10–16 kn79
Over 16 kn81
MACIA typical J/99How Race Edge works
Compare with another boat

Length

9.95 m

32′ 8″

Beam

3.41 m

Draft

2.00 m

Displacement

3.9 t

Sail area

60 m²

On the podium

Where MACI finishes when she goes racing.

Not enough data yet for her podiums: we have not found her in a race with six boats or more, measured on handicap.

Regattas

Every regatta we found with MACI on the start line, named as the organisers publish them.

  • Ærø Rund202695105

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How MACI compares with a typical J/99

Her main 2026 measurements against the middle of the fleet: one boat per sail number, the latest full-crew configuration with spinnaker, J/99s measured since 2025.

Above the line she is quicker than a typical J/99; below, slower. Move the wind: plenty of boats sit on one side in the light and the other when it blows.

True wind
Upwind-0.06 kn
Beam reach+0.06 kn
Broad reach+0.01 kn
Downwind+0.01 kn

Full width is 0.4 kn either way.

At 10 knots she gives away time to a typical J/99 on the upwind.

Speed at every angle

MACI in blue, a typical J/99 dashed.

30°60°90°120°150°WIND

MACI in blue, a typical J/99 dashed; green marks the closest useful beat and the deepest run worth sailing.

Other J/99s racing

Every sister ship with results on TackRegatta, the most recently raced first.

More about the J/99

Speed at every angle, Race Edge, the race record of the whole fleet and how the boats are set up.

Explore the design

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