BoatsMG Spring 25

MG Spring 25

Fractional Sloop · Wing Keel · First built 1986

A fractional sloop with a shallow 0.91-metre wing keel and twin rudders, produced internationally in Brazil and Australia

Designed by Tony Castro, built by Marine Glass.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Wing Keel

Is it for you?

Character

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

Shoal draughtDraws 0.91 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her light displacement on a beamy beam gives 16 — a quick, lively motion that feels every wave.

Comfort ratio 16
CoastalBluewater

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

Capsize screening 2.18
LightHeavy

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

Displacement / length 171
EasygoingPowered-up

19.4 — plenty of sail for her weight; lively and quick to respond.

Sail area / displacement 19.4
TenderStiff

34% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 34%

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

  • Draws less than ~91% of boats her size on file

Compared with 1618 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
34.4%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
19.4
Displacement / length
170.6
Comfort ratio
15.8
Capsize screening
2.18
Hull speed
6.4 kn
Pounds / inch immersion
732
Hull
Hull type
Wing Keel
Construction
Fiberglass
Production
Years built
First built 1986
Units built
160
Designer
Tony Castro
Builder
Marine Glass, Northshore Yachts

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.

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
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
Dehler Yachts 25CR7.50 mSame hull family0.3 m shorterA Van de Stadt-designed fractional sloop with a high sail area-to-displacement ratio built for spirited performance
International 8068.06 mSame hull family0.3 m longerA Pelle Petterson-designed fractional sloop with a skeg-hung rudder, built for performance since 1974
Jeanneau Sun Odyssey 267.47 mSame hull family0.3 m shorterA Philippe Briand-designed fractional sloop built for coastal cruising with a stiff, stable hull form
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

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

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