BoatsMamba 34

Mamba 34

Masthead Sloop · Fin keel, spade rudder · 1978–1986

A Rolf Magnusson-designed IOR 3/4 ton racer built for speed, also available with a fractional rig

Designed by Rolf Magnusson, built by Bk Marin.

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.

LivelySea-kindly

Her moderate displacement on a moderate beam gives 23 — a moderate, middle-of-the-road motion.

Comfort ratio 23
CoastalBluewater

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

Capsize screening 2.04
LightHeavy

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

Displacement / length 225
EasygoingPowered-up

16.9 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 16.9
TenderStiff

37% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 37%

A balanced, easily-driven cruiser — comfortable and forgiving for coastal work.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
37.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
16.9
Displacement / length
224.7
Comfort ratio
22.6
Capsize screening
2.04
Hull speed
7.1 kn
Pounds / inch immersion
1117
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Ballast type
Lead
Production
Years built
1978–1986
Units built
100
Designer
Rolf Magnusson
Builder
BK Marin

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.

Hunter Marine 339.96 mSame hull family0.2 m shorterA 1977 masthead sloop with a 38% ballast ratio, designed for stability and coastal performance
Moody 33310.06 mSame hull familyNear-identical lengthA twin-keel cruiser featuring an aft cabin with a double berth accessible directly from the saloon
Bavaria Yachts Cruiser 339.99 mSame hull family0.2 m shorterOriginally introduced as the Cruiser 32, this 9.99-metre fractional sloop offers a 1.95-metre draft for coastal sailing
Mirage 3310.21 mSame hull familyNear-identical lengthA Robert Perry-designed masthead sloop offering a balanced, performance-oriented cruiser profile in a 33-foot hull
Cal Boats 3410.13 mSame hull familyNear-identical lengthA masthead sloop with a fin keel and spade rudder, favored by Jensen Marine founder Jack Jensen for personal cruising
Salona 349.99 mSame hull family0.2 m shorterA J&J-designed fractional sloop balancing a performance-oriented SA/D ratio with a stable, modern fin-and-bulb hull

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 looking

Nothing filmed of this one yet

Two ways to keep looking — both search what the fleet has actually recorded.

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