Rolex Fastnet Race

Rolex Fastnet Race — IRC and ORC-rated boats

Cowes, UK Cherbourg, France
200 boats 34 events 255 races 1,212 obs International event fleet · as of 2026-04-21 · build a2e90234
Kinship

The Fastnet course is a hundred years old.

The Solent start, the Celtic Sea, the Fastnet Rock, Cherbourg finish — find the race’s waters.

 Hidden Shape

11 archetypes across 31 dimensional features.
How this fleet clusters before the results arrive.

How the Rolex Fastnet Race fleet races, before the results arrive.
Character

Six hundred miles. Portland, the Needles, the Rock. A century of offshore racing.

The Rolex Fastnet Race is the 600-nautical-mile Cowes-to-Cherbourg classic that founded offshore racing in 1925 and just staged its 100th edition in July 2025 — the first century of a race that created the RORC, invented the Admiral's Cup, and remains the single long-distance test where hull efficiency, crew execution, and tactical intelligence all have to hold together across every mile. The 2025 centenary drew over 450 entries, the largest fleet in the race's history, and brought the Admiral's Cup back for the first time since 2003.

Tidal gates at Portland Bill, the Needles, and the approaches to the Fastnet Rock are race-defining. Arriving at Portland on the wrong phase of the ebb can cost a boat two hours in six miles, and the fleet routinely splits on which gate to prioritise. The Celtic Sea's Atlantic exposure makes every Fastnet a weather story first and a boat story second — and the 100th edition was no exception, with a trim-disciplined top three of AEROMAX, KEELFLEX, and BALANCECORE carrying the day on a course that rewarded fine execution over brute force.

FleetEdge tracks 200 boats in the Fastnet fleet — ORC-rated and IRC-rated together, one of the richest cross-rating analytical datasets anywhere on the circuit. The 82 ORC-rated hulls carry the full measurement package; the 89 IRC-synthetic twins are matched to their ORC design-family equivalents by hull dimensions and projected with the full ORC physics profile (same polar, same hull model, same rig parameters), and every IRC twin is transparently labeled as a class-sibling projection. The centenary signature is Farr Designs' drawing board — 60 of 200 boats, 30.0% of the classified fleet — with the Beneteau First 34.7 and First 36.7 at the core of the cluster.

In 2027 the Fastnet runs its next biennial edition. And in August 2026, the Solent hosts the Cowes Week bicentenary (1–7 August) — the 200th anniversary of the regatta whose Needles-to-Shingles course is the same tidal gate the Fastnet fleet crosses at the start of its 600-mile run. The Fastnet story between centuries passes through a summer when the same British waters mark the start of Cowes Week's third century.

HYCOM Ocean ERA5 Atmosphere The Fastnet runs on both environmental axes in parallel, and FleetEdge reads them both. HYCOM GLBy 93.0 ocean-current reanalysis across Portland Bill, the Needles, and the Fastnet Rock approaches carries the tidal-gate story the fleet splits on; ECMWF's ERA5 atmospheric reanalysis across the Celtic Sea transit carries the weather-first story the 100th edition turned on. Both datasets sample at race-leg centroids and venue bounding boxes timed to each running's actual window. Current intelligence is flagship-scoped at launch across the five IRC offshore classics — Cowes, Fastnet, Rolex Middle Sea, Sydney–Hobart, and RORC Caribbean 600 — while atmospheric coverage is corpus-wide. See Ocean Intelligence for the race-by-race current treatment.

Fleet DNA

How the Fastnet fleet is built.

200 boats in the fleet. 82 ORC-rated and 89 IRC-synthetic attributed across 11 archetypes.

The Rolex Fastnet Fleet Signature

The Fastnet fleet is a narrow-envelope, crew-driven collective. AEROMAX leads at 21.6% (37 boats) — the power-efficiency hybrid with strong upwind drive and moderate displacement, the single largest archetype. KEELFLEX follows at 18.7% (32 boats) and BALANCECORE at 18.1% (31 boats), completing a top-three that accounts for 58% of the classified fleet. The signature favours narrow stability windows and heel-sensitive envelopes over the compact-rig STEELFORM and pressure-driven HEADFORCE families further down the table — hulls that reward careful sail handling and balanced trim over raw brute force across the 600-mile test.

  • AEROMAX 21.6% · 37 boats
  • KEELFLEX 18.7% · 32 boats
  • BALANCECORE 18.1% · 31 boats

Dimension emphasis: Crew Effectiveness · Comparative Time

Farr Designs anchors the drawing-board signature at 30.0% (60 boats) — the Beneteau First 34.7 / 36.7 cluster carries the French-and-British club-racer base through the Solent, Portland, and the Rock. In August 2026, the Fastnet hands the baton to the Cowes Week bicentenary (1–7 August) on the same Solent waters.

High confidence Production

The full 11-archetype distribution.

Aeromax

Power-efficiency hybrid with strong upwind drive and moderate displacement.

Boats 37
Share 21.6%

Keelflex

Narrow stability window; fast when perfectly balanced, punishing when not.

Boats 32
Share 18.7%

Balancecore

Heel-sensitive platform with a wider, more forgiving performance envelope.

Boats 31
Share 18.1%

Glideform

Low-drag hull with strong downwind bias through efficient waterline-to-beam ratios.

Boats 22
Share 12.9%

Stormline

Big-rig heel-sensitive platform with the fleet's highest rig-power-to-stability ratio.

Boats 12
Share 7.0%

Headforce

Pressure-driven compact-rig hull that punches through chop at the windward mark.

Boats 10
Share 5.8%

Deepframe

Deep-hull efficiency paired with a stiff platform for drag-optimised flow.

Boats 9
Share 5.3%

Aeroblade

Refined-rig platform with sharp heel sensitivity and rapid trim response when sailed flat.

Boats 8
Share 4.7%

Ironwind

Stiff, stable-drive platform with predictable load behaviour.

Boats 5
Share 2.9%

Steelform

Compact-rig stiff-platform with the fleet's lowest race-to-race variance.

Boats 3
Share 1.8%

Gravityrun

Heavy-mode momentum boat with strong downwind power in sustained breeze.

Boats 2
Share 1.2%

Under the refreshed MPAE Taxonomy v3, AEROMAX leads the Fastnet fleet at 21.6% of classified boats — the power-efficiency hybrid family with strong upwind drive and moderate displacement. KEELFLEX (18.7%) and BALANCECORE (18.1%) complete a tight top-three that accounts for 58% of the classified fleet, and GLIDEFORM adds another 12.9%. Fastnet boats cluster around narrow-envelope handling and crew-driven balance — the race rewards fine execution across shifting Celtic Sea conditions more than any single hull posture.

Latest story

The 100th edition, read through the allowance lens.

The 100th Rolex Fastnet Race in July 2025 was the largest Fastnet in history — 200 FleetEdge boats across 171 classified hulls, one corrected-allowance dataset, and four stories the narrow-envelope archetypes told across the 600-nautical-mile Cowes-to-Cherbourg course. These are the insights the 100th edition revealed, and the forward bridge into the 2026 Cowes Week bicentenary on the same Solent waters.

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Looking forward

The 100th Rolex Fastnet Race in July 2025 handed its story to the AEROMAX / KEELFLEX / BALANCECORE top-three — 100 of 171 classified boats, 58% of the cohort — on a mixed-tide Celtic Sea day where narrow envelopes and crew-driven balance beat raw hull power. In August 2026 the Solent hosts the Cowes Week bicentenary (1–7 August), the 200th anniversary of the regatta whose Needles-to-Shingles course is the same tidal gate the Fastnet fleet crosses at the start of its 600-mile run. The two events are not the same race, but they share the same water, the same August, and the same British offshore identity — the only two UK racing events with centenary-plus history.

When the Cowes Week bicentenary fleet crosses the Needles in August 2026, will the same narrow-envelope signature hold on the shorter inshore courses that defined the first 200 years of British regatta racing?

Read the UK country preview →
Magnitude Gap · Multi-Dimension

FREYA took Comp Time, Crew, and Heel Angle in one run.

ITA-15192 FREYA (Sciarrelli Schooner, BALANCECORE) posted a Comparative Time residual of −99.54 sec/nm vs ORC across the 83-boat ranked field — a 21.7 sec/nm margin over LEON in second and a 55.3 sec/nm margin over WHIMJY 99 in third. The same boat topped Crew Effectiveness at −100.93 sec/nm on the 82-boat Crew cohort and held the Heel Angle board at 4.8 degrees in 12-knot upwind conditions. Three dimensional boards, three first-place finishes, one Schooner-class BALANCECORE hull — the Fastnet solved quietly, without the rail in the water. BALANCECORE is the heel-sensitive hull with a wider, more forgiving performance envelope, and the 100th edition's conditions gave it exactly the window it needs.

  • FREYA Comp Time: −99.54 sec/nm · 1st of 83
  • FREYA Crew Eff: −100.93 sec/nm · 1st of 82
  • FREYA Heel Angle: 4.8° · 12 kn upwind
High confidence RR Rolex Fastnet 2025
Archetype Cluster · Nationality Signature

Three French shorthanded GLIDEFORM hulls cluster at the top.

LEON (FRA-53524, JPK 1050), WHIMJY 99 (FRA-53331, J 99), and Tenet (JPK 10.30) — three French shorthanded-pedigree hulls cluster inside the Comparative Time top-6 and the Sail Drive top-3 of the 100th-edition Fastnet. LEON posted a Comp Time residual of −77.85 sec/nm vs ORC, WHIMJY 99 at −44.28, and Tenet's Sail Drive Efficiency of 3.037 put it 0.08 behind BEAU IDEAL at the top of that family. Three boats, three dimensions, seven podium slots: GLIDEFORM is the low-drag hull with strong downwind bias through efficient waterline-to-beam ratios, and the French shorthanded lineage converted that envelope into tight, crew-driven execution over 600 nautical miles. A nationality-plus-class signature that rewards crew-limited boats over maxi platforms on the corrected-allowance scale.

  • LEON Comp Time: −77.85 sec/nm · 2nd of 83
  • WHIMJY 99 Comp Time: −44.28 sec/nm · 3rd of 83
  • Tenet Sail Drive: 3.037 · 2nd of 82
High confidence RR Rolex Fastnet 2025
Designer-Structural Anchor

Farr Designs anchors one in every three Fastnet hulls.

Farr B — 60 of 200 boats, 30.0% of the classified Fastnet fleet. No other drawing board even reaches 15%. Johnstone R (24 boats, 12.0%), Judel-Vrolijk (13 / 6.5%), and Jeppesen-Nielsen (10 / 5.0%) fill in behind. The Farr signature — narrow-beam, moderate-displacement, crew-balanced hulls — shows up at the Rock through the Beneteau First 34.7 (17 boats) and First 36.7 (20 boats) cluster and the larger IRC raceboats. Together, the Farr-drawn Beneteau First line (34.7 + 36.7 + 40 + 40.7) accounts for 53 boats in the Fastnet, more than a quarter of the whole fleet. No single designer concentrates the French-and-British club-racer base the way Farr does on this course — and it is the structural reason the narrow-envelope AEROMAX / KEELFLEX / BALANCECORE top-three carries the 100th-edition signature.

  • Farr Designs: 60 boats · 30.0% of fleet
  • Beneteau First cluster: 53 boats (34.7 / 36.7 / 40 / 40.7)
  • Next designer: Johnstone R at 12.0% (24 boats)
High confidence FE Structural Analytics
Archetype-Conditions Dominance

Narrow envelopes carried the day on a mixed-tide Celtic Sea.

100 of 171 classified boats — 37 AEROMAX, 32 KEELFLEX, and 31 BALANCECORE — sit inside the three most-represented archetypes in the 100th-edition Fastnet cohort. On a 600-nautical-mile Solent-to-Rock-to-Cherbourg course that blended breeze, tidal gates at Portland and the Needles, and the Celtic Sea's Atlantic exposure in the conditions that prevailed on the day, the AEROMAX / KEELFLEX / BALANCECORE top-three carried the day over the compact-rig STEELFORM and pressure-driven HEADFORCE families further down the table. AEROMAX converting power into upwind drive, KEELFLEX inside its narrow stability window, BALANCECORE on its forgiving envelope — three different archetype answers to the same mixed-tide day. A pure upwind gale or a sustained light-air run would have rewarded a different set; the 100th Fastnet chose the trim-disciplined top three on the day it ran.

  • AEROMAX + KEELFLEX + BALANCECORE: 100 boats · 58% of classified
  • GLIDEFORM top-3 all French: LEON / WHIMJY 99 / Tenet
  • SHK SCALLYWAG Upwind VMG ceiling: 9.21 kn · 12 kn true
High confidence RR Rolex Fastnet 2025
Continue

Go deeper.

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Seven races across the English Channel.

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600 nm from the Solent to the Rock and back. The centenary fleet, dissected.

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