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Elan GT6vsX-Yachts X4.6 MkII

GT6 is 2.5 ft longer than X4.6 MkII (5%). GT6 is 0.7 ft wider than X4.6 MkII (5%). GT6 is the heaviest at 29,410 lb, 17% more than X4.6 MkII.

Anyone with the link sees this comparison.

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
Elan GT6

Elan

GT6
The New X4⁶ MkII

X-Yachts

X4.6 MkII
Overview
BrandElanX-Yachts
ModelGT6X4.6 MkII
GenerationUnknownUnknown
Hull typeSailing MonohullSailing Monohull
PropulsionSailSail
Production statusIn productionIn production
Production start yearUnknownUnknown
Production end yearUnknownUnknown
DesignerStudio F. A. PorscheX-Yachts Design Team
Dimensions
LOA49.7 ft47.1 ft
Hull length47 ft44.3 ft
Beam14.7 ft14 ft
Draft6.5 ft–8 ft7.5 ft–8.2 ft
Displacement29,410 lb25,056 lb
Accommodation
Cabins2–33
Heads22
BerthsUnknown6
Performance & Rig
Main sail674 ft²Unknown
Jib550 ft²Unknown
GenoaUnknownUnknown
Upwind sail areaUnknownUnknown
Downwind sail area1,647 ft²Unknown
Engine power57 hp–80 hp57 hp–80 hp
Engine count11
Materials
Hull materialUnknownepoxy/GRP
Deck materialUnknownUnknown
Mast materialUnknownUnknown
Keel typeUnknownT keel
Rudder typeUnknownUnknown
Sources

13 of 13 figures here carry the builder's own words

11 of 13 figures here carry the builder's own words

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 ft40 ftGT6: 49.7 ft × 14.7 ftX4.6 MkII: 47.1 ft × 14 ftGT649.7 ft × 14.7 ftX4.6 MkII47.1 ft × 14 ft

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

From the side — height above and depth below the water
WaterlinePerson, 5.9 ftGT6: 71.9 ft / 8 ft71.9 ft8 ftGT6X4.6 MkII: 71 ft / 8.2 ft71 ft8.2 ftX4.6 MkII

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.

  • GT6

    Fuel79 gal
    Water132 gal

  • X4.6 MkII

    Fuel74 gal
    Water95 gal

    16 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.

ModestCruiserPerformanceRacing162024GT6: 20.6
  • GT620.6· Performance
  • X4.6 MkIInot published: sail area
How it is worked out

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

GT6: mainsail + jib, added up

Displacement / length

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

UltralightLightModerateHeavyVery heavy100180270350GT6: 151X4.6 MkII: 169
  • GT6151· Light
  • X4.6 MkII169· Light
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.

LowModerateHigh3040GT6: 29X4.6 MkII: 40
  • GT629· Low
  • X4.6 MkII40· High
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 heavy20304050GT6: 27.3X4.6 MkII: 26.9
  • GT627.3· Coastal
  • X4.6 MkII26.9· 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 above2GT6: 1.91X4.6 MkII: 1.92
  • GT61.91· Below 2
  • X4.6 MkII1.92· Below 2
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.

  • GT68.9 kn
  • X4.6 MkII8.5 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.