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Italia Yachts IY 9.98 nextGenvsTartan 34

Italia Yachts IY 9.98 nextGen is 0.7 ft wider than Tartan 34 (6%). Italia Yachts IY 9.98 nextGen offers up to 2 cabins; Tartan 34 at most 1. Italia Yachts IY 9.98 nextGen carries the most sail for its weight (SA/D 29.9, Racing); Tartan 34 the least (22.2, Performance).

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
IY 9.98 nextGen underway
335IntMainSalon3

Tartan Yachts

Tartan 34
Overview
BrandItalia YachtsTartan Yachts
ModelItalia Yachts IY 9.98 nextGenTartan 34
GenerationUnknownUnknown
Hull typeSailing MonohullSailing Monohull
PropulsionSailSail
Production statusIn productionIn production
Production start yearUnknownUnknown
Production end yearUnknownUnknown
DesignerUnknownUnknown
Dimensions
LOA33.8 ft33.5 ft
Hull lengthUnknownUnknown
Beam11.6 ft10.9 ft
Draft6.2 ft–6.9 ft6 ft
Displacement8,818 lb8,999 lb
Accommodation
Cabins21
HeadsUnknown1
BerthsUnknown4
Performance & Rig
Main sail441 ft²Unknown
Jib355 ft²Unknown
GenoaUnknownUnknown
Upwind sail area797 ft²601 ft²
Downwind sail area1,345 ft²845 ft²
Engine powerUnknown20 hp
Engine countUnknown1
Materials
Hull materialGRP with vinylester resin infusionUnknown
Deck materialUnknownUnknown
Mast materialUnknownUnknown
Keel typeUnknownUnknown
Rudder typeUnknownUnknown
Sources

Figures read fromitaliayachtsinternational.com/en/fuoriserie-series/iy-9-98-nextgen/· data gridread 9/20/2026

7 of 10 figures here carry the builder's own words

Figures read fromtartanyachts.com/models/tartan-34/· 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 ftItalia Yachts IY 9.98 nextGen: 33.8 ft × 11.6 ftTartan 34: 33.5 ft × 10.9 ftItalia Yachts IY 9.98 nextGen33.8 ft × 11.6 ftTartan 3433.5 ft × 10.9 ft

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

From the side — height above and depth below the water
WaterlinePerson, 5.9 ftItalia Yachts IY 9.98 nextGen: air draft not published / 6.9 ftair draft not published6.9 ftItalia Yachts IY 9.98 nextGenTartan 34: 52.2 ft / 6 ft52.2 ft6 ftTartan 34

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.

No drawings collected yet for Italia Yachts IY 9.98 nextGen.

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.

  • Italia Yachts IY 9.98 nextGen

    Fuelnot published
    Waternot published

  • Tartan 34

    Fuel25 gal
    Water40 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.

ModestCruiserPerformanceRacing162024Italia Yachts IY 9.98 nextGen: 29.9Tartan 34: 22.2
  • Italia Yachts IY 9.98 nextGen29.9· Racing
  • Tartan 3422.2· Performance
How it is worked out

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

Italia Yachts IY 9.98 nextGen: published upwind sail area

Tartan 34: 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 heavy100180270350Tartan 34: 162
  • Italia Yachts IY 9.98 nextGennot published: waterline length
  • Tartan 34162· 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.

LowModerateHigh3040Tartan 34: 37
  • Italia Yachts IY 9.98 nextGennot published: ballast
  • Tartan 3437· 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 heavy20304050Tartan 34: 18.8
  • Italia Yachts IY 9.98 nextGennot published: waterline length
  • Tartan 3418.8· Light
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 above2Italia Yachts IY 9.98 nextGen: 2.25Tartan 34: 2.10
  • Italia Yachts IY 9.98 nextGen2.25· 2 and above
  • Tartan 342.10· 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.

  • Italia Yachts IY 9.98 nextGennot published: waterline length
  • Tartan 347.2 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.

Italia Yachts IY 9.98 nextGen vs Tartan 34: specifications compared | YachtCodex