BoatsTartan Marine 31

Tartan Marine 31

Masthead Sloop · Fin keel, spade rudder · 1987–1991

A 1987-1991 production masthead sloop with a 1.83-metre fin keel and a balanced 43% ballast ratio

Designed by Tim Jackett W.

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 21 — a moderate, middle-of-the-road motion.

Comfort ratio 21
CoastalBluewater

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

Capsize screening 2.10
LightHeavy

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

Displacement / length 229
EasygoingPowered-up

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

Sail area / displacement 18.7
TenderStiff

43% of her weight is ballast — stiff, standing up well to her sails.

Ballast 43%

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

  • Draws more than ~76% of boats her size on file

Compared with 2654 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
43.2%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
18.7
Displacement / length
229.4
Comfort ratio
20.9
Capsize screening
2.10
Hull speed
6.8 kn
Pounds / inch immersion
1014
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Ballast type
Lead
Production
Years built
1987–1991
Units built
146
Designer
Tim Jackett w
Builder
Tartan Marine

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.

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
Hunter Marine 319.55 mSame hull familyNear-identical lengthA Cortland Steck design featuring a B&R rig and a fin keel, built for coastal cruising between 1983 and 1987
Maxi Yachts 959.50 mSame hull familyNear-identical lengthA 9.5-metre masthead sloop produced for a decade, featuring a skeg-hung rudder for predictable coastal handling
Beneteau Oceanis 319.66 mSame hull familyNear-identical lengthA Finot-Conq designed fractional sloop balancing a modern hull form with a stable 1.8-meter bulb keel
Granada Yachts 319.39 mSame hull family0.2 m shorterA masthead sloop with a spade rudder and nearly 46% ballast ratio, designed for stability in a 31-foot hull
Elvstrom 329.56 mSame hull familyNear-identical lengthA versatile 1/2 Ton masthead sloop offered in flush deck or coach roof versions, sharing a hull with several other designs

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

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

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