BoatsPlasto GmbH Ra-Antares

Plasto GmbH Ra-Antares

Masthead Sloop · Fin keel, spade rudder · First built 1975

A high-performance IOR quarter-tonner designed by Hubert Weber, featuring a powerful sail area-to-displacement ratio

Designed by Hubert Weber.

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

Is it for you?

Character

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

TrailerableBeam 2.49 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,520 kg of hull, so roughly 2,100 kg on a trailer: check that against your own towing rating.
LivelySea-kindly

Her moderate displacement on a moderate beam gives 15 — a quick, lively motion that feels every wave.

Comfort ratio 15
CoastalBluewater

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

Capsize screening 2.19
LightHeavy

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

Displacement / length 187
EasygoingPowered-up

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

Sail area / displacement 24.9
TenderStiff

41% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 41%

Powered-up and quick to accelerate — this one likes to sail.

  • Lighter than ~75% of boats her size on file

Compared with 1598 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
41.5%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
24.9
Displacement / length
186.7
Comfort ratio
14.6
Capsize screening
2.19
Hull speed
6.0 kn
Pounds / inch immersion
584
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Production
Years built
First built 1975
Designer
Hubert Weber
Builder
Plasto GmbH, Co

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.

J Boats Tillotson Pearson J/247.32 mSame hull family0.4 m shorterA legendary Rodney Johnstone design that defined the modern one-design racer with its high sail-area-to-displacement ratio
Everything You Think About Sailing Is Wrong3:59from The Sailing Doodles Podcast
Jeanneau Sun Odyssey 24.27.30 mSame hull family0.4 m shorterA Jacques Fauroux-designed fractional sloop built for coastal cruising with a stable fin-and-bulb keel
Sailing under asymmetric spinnaker with a Sun Odyssey1:24from VOILIER ODIN
Dehler Yachts 25CR7.50 mSame hull family0.2 m shorterA Van de Stadt-designed fractional sloop with a high sail area-to-displacement ratio built for spirited performance
Don't Make The Same MISTAKE We Did [Ep.28]9:27from Sailing Oceanaire | Wik & Rox
Martinique 257.70 mSame hull familyNear-identical lengthA Brazilian-built masthead sloop with a 44% ballast ratio, offering a stiff and stable platform for coastal cruising
The Day I Found My Sailboat, Balanço | #SAL Cut #513:35from Hashtag Sal
Maxi Yachts 777.70 mSame hull familyNear-identical lengthThe most popular model in the builder's history, offering both inboard and outboard engine options for versatile cruising
From Helsesista to Adventure Tale: How she found joy on the "high seas" in the Inner Oslo Fjordfrom SEILmagasinet
Sirius 7277.27 mSame hull family0.4 m shorterA development of the Sirius 24, this fractional sloop features a fin keel with skeg-mounted rudder for balanced handling
Two Different Ways Sailing Changes Lives | #SAL #2510:15from Hashtag Sal

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

Plasto GmbH Ra-ArgunaA 7-metre swing-keel fractional sloop built for shoal water versatility with a spirited sail area-to-displacement ratioAntares 17A fractional sloop built since 1987, featuring a unique deck configuration atop the proven Sovereign 17 hullRethana Yachts 27A Herbert Klein-designed masthead sloop with a keel-centreboard configuration, built for versatility in shoal waters

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