Japan

222 Japanese boats from Tokyo Bay to the Seto Inland Sea. A Farr-anchored Pacific fleet — LEANFORCE and HEFTLINE platforms head a full-spectrum design distribution.

Kinship

Every fleet has a fingerprint.

From the Solent’s tide-lines to the Seto Inland Sea — find your waters.

 Hidden Shape

The hidden shape of the fleet.
The kinds of boat that keep appearing when every hull is measured the same way.

How every Japanese boat clusters, before the results arrive.
222
boats
8
archetypes
National fleet view · as of 2026-08-20

National fleet view · 222 boats · as of 2026-08-20

At a glance

Japan — structural profile.

Scope
222 boats
51 ORC-rated · 171 mapped-IRC
Top 3 archetypes
  1. LEANFORCE — 47 boats (21.2%)
  2. HEFTLINE — 44 boats (19.8%)
  3. AEROCORE — 31 boats (14.0%)
Eight canonical performance archetypes cluster the fleet by dimensional signature. See the full map →
Top designer cluster
Farr Design
65 boats (29.3%) — the most-represented design voice in this fleet.

Counts and archetype assignments above are measured from the current corpus. Commentary below is interpretive.

National fleet view · as of 2026-08-20
Fleet DNA

How the Japanese boats are built.

222 boats in the fleet. 51 ORC-rated and 171 mapped IRC entries attributed across 8 archetypes — here's how they cluster, and what the collective signature reveals about how Japan races.

The Japanese ORC Fleet Signature

Japan's fleet reads as a Farr-anchored Pacific collective led by a compact-scale tier, with a displacement-led group of almost equal weight behind it and a long, full-spectrum structural tail. LEANFORCE leads at 21.2% (47 boats) — the Compact family, narrow hulls sitting at the short end of the hull-proportion axis, which sit in line with the fleet norm downwind in banked race evidence and put a premium on crew execution. HEFTLINE takes second at 19.8% (44 boats), compact, level-trimmed hulls on a stiff righting reserve that run reaching-neutral in banked race evidence. AEROCORE and LEANRUN sit level behind them at 14.0% (31 boats each) — two large-platform, upright groups, the first carrying a measured downwind advantage in banked race evidence and the second sitting in line with the fleet norm downwind. The four largest archetypes carry 68.9% of the fleet between them, and none holds a controlling share: all eight archetypes are populated, a full-spectrum distribution running from towering offshore platforms to minimal-scale sportboats — and the strongest structural signal sits with the design board, where Farr Design draws 29.3% of the hulls.

  • LEANFORCE 21.2% · 47 boats
  • HEFTLINE 19.8% · 44 boats
  • LEANRUN 14.0% · 31 boats

Dimension emphasis: Hull Efficiency · Rating & Classification

The 2026 Japanese forward path runs the JSAF domestic circuit and the Kennosuke Cup as the home-water anchor — Tokyo Bay, Sagami Bay, Seto Inland Sea — with Pacific offshore destination campaigns carrying Japanese boats into Rolex Fastnet and US ocean-race venues as the international footprint. Farr Design's concentration — 65 of the fleet's 222 hulls — is the structural through-line that travels with the fleet.

Complete data Latest published view

HEFTLINE

Compact scale · level posture · stiff reserve — reaching-neutral in banked race evidence.

moderate upwind · moderate reaching · moderate downwind

Boats 44
Share 19.8%
  • J-111
  • Farr 30
  • Cape 31

AEROSTREAM

Towering scale · level posture · stiff reserve — measured downwind advantage in banked race evidence.

strong upwind · weak reaching · strong downwind

Boats 28
Share 12.6%
  • TP-52
  • XP-44
  • Farr 40

KEELRUN

Compact scale · upright posture · neutral reserve — reaching-neutral in banked race evidence.

moderate upwind · strong reaching · moderate downwind

Boats 10
Share 4.5%
  • First 31.7
  • J-105
  • Sunfast 3200

LEANRUN

Large scale · upright posture — downwind-neutral in banked race evidence.

neutral upwind · neutral reaching · neutral downwind

Boats 31
Share 14.0%
  • First 36.7
  • J-109
  • First 35

SPARKFLEX

Minimal scale · upright posture · tender reserve — downwind-constrained in banked race evidence.

weak upwind · moderate reaching · weak downwind

Boats 9
Share 4.1%
  • J-80 OD
  • J-24
  • J-70 ONE DESIGN

AEROCORE

Large scale · upright posture · tender reserve — measured downwind advantage in banked race evidence.

neutral upwind · neutral reaching · neutral downwind

Boats 31
Share 14.0%
  • First 36
  • Bavaria CR 46
  • J-120

AEROFORCE

Large scale · level posture · neutral reserve — reaching-constrained in banked race evidence.

neutral upwind · weak reaching · neutral downwind

Boats 22
Share 9.9%
  • First 40.7
  • X-43
  • Grand Soleil 40

LEANFORCE

Compact scale — downwind-neutral in banked race evidence.

weak upwind · neutral reaching · weak downwind

Boats 47
Share 21.2%
  • Fortuna 9
  • Mat 10.10
  • Aphrodite 101

Classified fleet view · 222 of 222 classified · as of 2026-08-20

Fleet Stories

The Japanese fleet signature.

Farr Design anchors the Japanese fleet

Farr Design draws 65 of the 222 JPN-flagged boats — 29.3%, nearly three in ten Japanese hulls sailing to a Farr line. The concentration runs straight through the fleet's backbone classes: the Farr-penned First 34.7, the largest single class in the Japanese fleet, and the First 40.7 alongside it, with the Farr 40 owner-driver class and the Farr 30 sportboat line completing a board that shaped a generation of Pacific offshore programs. It is not a one-design phenomenon — coastal racer-cruisers, owner-driver one-design, and big-boat offshore platforms all carry the same design signature.

LEANFORCE leads the Japanese fleet

LEANFORCE is the largest archetype in the national fleet — 47 boats, 21.2% of the 222 JPN-flagged fleet — the Compact family, narrow hulls at the short end of the hull-proportion axis that sit in line with the fleet norm downwind in banked race evidence and reward crew execution. HEFTLINE is close behind at 44 boats (19.8%), compact, level-trimmed platforms on a stiff righting reserve, with AEROCORE and LEANRUN level at 31 boats each (14.0%). The four leading archetypes carry a little under seven of every ten boats — a broad front group spanning scale and stiffness rather than a single-type monoculture, with all eight archetypes populated behind it.

Popular Classes

The boats that define Japanese racing.

First 34.7 (26)

Beneteau's Farr-penned mid-size racer-cruiser — the single largest class in the Japanese fleet and the backbone of its IRC and ORC entry lists.

First 31.7 (13)

Beneteau's Finot-designed club racer — a compact, durable offshore platform that fills the lower-rating end of the fleet.

First 40.7 (12)

The Farr Design Beneteau 40-footer that defined a decade of racer-cruiser racing — the bigger-boat companion to the First 34.7 family.

J-109 (12)

J/Boats' mid-2000s IRC 35-footer — one-design capable and handicap friendly, central to the mid-size offshore grid.

X-35 OD (9)

X-Yachts' Jeppesen-Nielsen 35 raced as a strict one-design class — sharp-edged, stiff, and fast.

Continue

Go deeper.

ORC World Fleet

How Japan's fleet sits inside the global ORC fleet and the international offshore landscape.

Australia

Pacific peer fleet — Sydney Hobart, the Tasman, and the archetype mix of the Australian fleet.

Fleet Archetypes

The canonical performance archetypes — LEANFORCE, HEFTLINE, AEROCORE and the full set of design groups that clusters Japan's fleet.

Platform Scale

How FleetEdge measures racing across geographies and fleet types — every fleet's hidden shape.

Join the world's offshore racing teams.

Historical weather meets hull physics — every fleet, every leg.

See Japan Racing — ORC World Fleet See Fleet Overview