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

See her sail

The Tartan Marine 31, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from Lady K Sailing

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.

What the fleet has seen

The Tartan Marine 31, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Tartan Marine 31 is a masthead sloop designed by Tim Jackett and built by Tartan Marine from 1987 to 1991, featuring a fin keel with a spade rudder. It measures 9.6 meters LOA, with a 3.3-meter beam, a 1.8-meter draft, and a displacement of 4095 kg. A shoal draft version with a 1.32-meter draft was also available. The Tartan 31 is part of the Tartan 30 series, known for balancing performance and build quality for both cruising and PHRF racing.9:26

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Basemap © Wikimedia Commons · CC BY-SA 4.0

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

More boats like her, on the water

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
E64: Calibrating my Depth Sounder Underwater and Goodbye Makemo!1:40from Wind Hippie Sailing
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
Inside Our New Sailboat… A Full Walkthrough of Our Home0:10from Sailing Nomadika
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
SEILmagasinet TV episode 5 20269:59from SEILmagasinet
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
Maxi 95: The world's largest 31-footerfrom SEILmagasinet
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
Sailor James and John Conway of @SV Felurian Talk about His New Rolly Tasker Sails2:30from Sailing Triteia
Compromis 9099.45 mSame hull familyNear-identical lengthA 1985 Frans Maas masthead sloop featuring a shallow 1.24m draft and a 37% ballast ratio for stable coastal cruising
We Bought a Sailboat for €9,000! BOAT TOUR COMPROMIS 909 NORDIC SAILBOATS ⛵️from navegandoporelglobo

The family

Boats like this

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

Tartan Marine 372A 1988-1993 masthead sloop featuring a deep 2.08-metre fin keel and a spade rudder for performance-oriented cruisingTartan Marine 28A Sparkman & Stephens masthead sloop designed for balanced performance with a stiff 43% ballast ratioTartan Marine 31 PiperFeaturing a signature Beaver Tail keel, this updated cruiser offers a revised interior layout for improved comfortTartan Marine 3800A 1994-1999 production cruiser featuring a shallow 1.62-metre draft and a bulb-fin keel for versatile coastal accessTartan Marine 3500A 1993 masthead sloop with a 1.98-metre draft and a balanced displacement-to-ballast ratio for coastal cruising

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