BoatsMp 31

Mp 31

Fractional Sloop · Fin keel, spade rudder · 1982–1984

A light-displacement fractional sloop with a 20.39 SA/D ratio, designed for speed in a compact 9.45-meter hull

Designed by Matti Pulli, built by Lansivene Oy.

LOA
Beam
Draft (max)
Displacement
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.

LivelySea-kindly

Her moderate displacement on a moderate beam gives 17 — a quick, lively motion that feels every wave.

Comfort ratio 17
CoastalBluewater

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

Capsize screening 2.24
LightHeavy

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

Displacement / length 198
EasygoingPowered-up

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

Sail area / displacement 20.4

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

The record

Full specifications

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

Dimensions
Weights
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
20.4
Displacement / length
198.1
Comfort ratio
16.8
Capsize screening
2.24
Hull speed
6.7 kn
Pounds / inch immersion
923
Hull
Hull type
Fin w/spade rudder
Construction
Wood
Production
Years built
1982–1984
Units built
8
Designer
Matti Pulli
Builder
Lansivene 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.

Maestro Boats 319.30 mSame hull familyNear-identical lengthAn E.G. van de Stadt-designed IOR 1/2 ton racer with a high sail area-to-displacement ratio for spirited performance
Beneteau First 3059.30 mSame hull familyNear-identical lengthA Jean Berret-designed masthead sloop offering versatile keel and rig configurations for coastal cruising
First 30 E (Beneteau - Berret)9.30 mSame hull familyNear-identical lengthA 1981 International 1/2 Ton Cup winner based on the King One design, built as a masthead sloop for competitive racing
Bavaria Yachts 3009.55 mSame hull familyNear-identical lengthA 9.55-metre fractional sloop from 1989, featuring a deep 1.65-metre fin keel and bulb for efficient coastal sailing
Spirit 329.48 mSame hull familyNear-identical lengthA Jacques De Ridder-designed IOR 23-footer built for nearly two decades as a stiff, masthead-rigged fin-keel sloop
Bavaria Yachts Cruiser 309.47 mSame hull familyNear-identical lengthA 9.47-metre fractional sloop from 2005, designed for manageable coastal cruising with a shallow 1.4-metre draft

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.

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