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Hallberg-Rassy 340vsTartan 37

Tartan 37 is 0.6 ft wider than Hallberg-Rassy 340 (5%). Hallberg-Rassy 340 draws the least water, 5.2 ft — 1.2 ft less than Tartan 37.

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Key differences

Worked out from the published figures below — arithmetic, not opinion.

At a glance

Dark icons are the standard layout; faded ones are what the larger layout adds.

Length : beam is length divided by beam — the higher it is, the slimmer the hull. Multihulls read low by nature.

A figure marked with a quote mark was read from the builder's page. Open it for the exact line, the page and the date.

Model
Hallberg-Rassy 340 sailing

Hallberg-Rassy

Hallberg-Rassy 340
365ExtTransomCrop

Tartan Yachts

Tartan 37
Overview
BrandHallberg-RassyTartan Yachts
ModelHallberg-Rassy 340Tartan 37
GenerationUnknownUnknown
Hull typeSailing MonohullSailing Monohull
PropulsionSailSail
Production statusIn productionIn production
Production start yearUnknownUnknown
Production end yearUnknownUnknown
DesignerFrers Naval Architecture and EngineeringUnknown
Dimensions
LOA35.9 ft36.5 ft
Hull length34 ftUnknown
Beam11.4 ft12 ft
Draft5.2 ft–6.2 ft6.5 ft
Displacement13,184 lb12,875 lb
Accommodation
Cabins1–22
Heads11
BerthsUnknown6
Performance & Rig
Main sailUnknownUnknown
JibUnknownUnknown
GenoaUnknownUnknown
Upwind sail area691 ft²644 ft²
Downwind sail areaUnknown892 ft²
Engine power29 hp30 hp
Engine count11
Materials
Hull materialUnknownUnknown
Deck materialUnknownUnknown
Mast materialUnknownUnknown
Keel typeBulbed lead keelUnknown
Rudder typeUnknownUnknown
Sources

12 of 12 figures here carry the builder's own words

Figures read fromtartanyachts.com/models/tartan-37/· Dimensions / Accommodations / Tankage / Sail Arearead 9/18/2026

Size, to scale

Each boat's published length and beam seen from above, and its mast height and draft from the side, all drawn on one scale.

From above — length × beam
0 ft10 ft20 ft30 ftTartan 37: 36.5 ft × 12 ftHallberg-Rassy 340: 35.9 ft × 11.4 ftTartan 3736.5 ft × 12 ftHallberg-Rassy 34035.9 ft × 11.4 ft

Outlines are schematic; the dimensions are the builder's.

From the side — height above and depth below the water
WaterlinePerson, 5.9 ftHallberg-Rassy 340: 53.9 ft / 6.2 ft53.9 ft6.2 ftHallberg-Rassy 340Tartan 37: 55 ft / 6.5 ft55 ft6.5 ftTartan 37

Drawings side by side

Each boat's layouts, profiles and sail plans as its builder published them. Step through each column to line up the drawings you want to compare.

Speed, power & tanks

What the builders publish about how fast, how strong and how far — each figure on one scale for every boat.

Tanks

One scale per liquid across every boat: a tank twice the height holds twice as much.

  • Hallberg-Rassy 340

    Fuel50 gal
    Water73 gal

  • Tartan 37

    Fuel35 gal
    Water60 gal

    10 gal of water per berth

How they sail, in numbers

Classic yacht-design ratios worked out from each builder's published figures. They compare boats; they don't grade them.

Sail area / displacement

How much sail the boat carries for its weight — its power in light air.

ModestCruiserPerformanceRacing162024Hallberg-Rassy 340: 19.8Tartan 37: 18.7
  • Hallberg-Rassy 34019.8· Cruiser
  • Tartan 3718.7· Cruiser
How it is worked out

sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔

Hallberg-Rassy 340: published upwind sail area

Tartan 37: published upwind sail area

Displacement / length

How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.

UltralightLightModerateHeavyVery heavy100180270350Hallberg-Rassy 340: 162Tartan 37: 192
  • Hallberg-Rassy 340162· Light
  • Tartan 37192· Moderate
How it is worked out

displacement (long tons) ÷ (0.01 × waterline length in ft)³

Ballast ratio

The share of the weight carried in the keel — a rough guide to stiffness, though how deep that weight sits matters as much.

LowModerateHigh3040Hallberg-Rassy 340: 38Tartan 37: 33
  • Hallberg-Rassy 34038· Moderate
  • Tartan 3733· Moderate
How it is worked out

ballast ÷ displacement × 100

Comfort ratio

Ted Brewer's measure of how gently a boat moves in a seaway. Higher means a slower, easier motion.

LightCoastalModerate offshoreHeavy offshoreVery heavy20304050Hallberg-Rassy 340: 23.3Tartan 37: 22.0
  • Hallberg-Rassy 34023.3· Coastal
  • Tartan 3722.0· Coastal
How it is worked out

displacement (lb) ÷ (0.65 × (0.7 × LWL + 0.3 × LOA) × beam^1.333), lengths in ft

Capsize screening

A guide from the inquiry after the 1979 Fastnet race: below 2 was taken as suited to ocean passages. It ignores hull shape and where the ballast sits.

Below 22 and above2Hallberg-Rassy 340: 1.93Tartan 37: 2.05
  • Hallberg-Rassy 3401.93· Below 2
  • Tartan 372.05· 2 and above
How it is worked out

beam (ft) ÷ (displacement as ft³ of seawater)^⅓

Hull speed

Roughly the speed a displacement hull reaches before it has to climb its own bow wave.

  • Hallberg-Rassy 3407.7 kn
  • Tartan 377.5 kn
How it is worked out

1.34 × √(waterline length in ft), in knots

Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.

Worth adding to this comparison

The boats most like the ones above, by hull form, size and use.