a sailing expedition around the world and to the edges of the Arctic

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passing through the north

The first world circumnavigation under pure sail via the Northern Hemisphere.

Route Map
In 1521, Spanish sailors completed the first circumnavigation of the globe. This winter, racing boats are attempting to break the world circumnavigation record. They sail 6 times faster than Spanish caravels, but apart from the direction of rotation, their route has barely changed: a 22,000 nautical mile course via the three capes.
In the North, melting sea ice in the Arctic is revealing a new ocean. Water that used to be frozen is becoming navigable, opening wild and untouched coastlines. In summer 2027, I will sail around the World, under pure sail and without an engine, through the North and the Arctic. A shortcut and an unprecedented route made possible by ingenious and bold navigation choices.

Support the challenge by clicking here.
Trimaran Paradox

sobriety and reuse

The method: reviving a former racing boat and using 100% second-hand equipment, from solar panels to drysuits. The goal: a carbon footprint 1,500 times lower, proving that an ambitious and exciting athletic project can be led with minimal impact while promoting circular economy!

This circular approach aligns with low-tech ingenuity and DIY adaptability in preparing the boat for an unprecedented route. It is the opportunity for a powerful narrative: a human and athletic adventure with a minimal environmental footprint that embodies circular values!

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World Map

The ocean

Melting sea ice in the Arctic opens a new ocean and releases wild shorelines. As a consequence of rising temperatures, over the years, less ice forms in winter and more melts in summer. North of Greenland, Canada, or Siberia, melting sea ice is rendering navigable the sea that used to be frozen.
By analyzing satellite imagery over recent summers and ice condition trends, I confirmed the feasibility. A determined crew equipped with a perfectly adapted sailboat can navigate both the Northeast Passage, north of Eurasia, and the Northwest Passage, north of America. In doing so, I will complete a world circumnavigation via the shortest route. It is now up to me to deliver the practical proof!

Accomplishing an athletic and technical performance

Completing an unassisted Arctic circumnavigation under pure sail represents an unprecedented navigation feat, requiring technical ingenuity, endurance and adaptation to the polar environment. It will be a notable first.
Choice of boat

October 2024 - February 2025

Initialization & Planning

  • Choice and acquisition of the boat
  • Assembly of the crew
  • Theoretical study and routing simulations based on 4 years of archive weather & satellite data
  • Design of technical solutions required for this navigation
  • Management of administrative procedures (authorizations, visas, clearances)
Boat refit

February 2025 - July 2026

Technical refit on the boat

  • Conveyance of the sailboat to Lorient and refit: complete structural check, reliability enhancement, and weight reduction.
  • Preparation and specific adaptation of the boat: maneuver simplification, sail area expansion, structural reinforcements, pedal drive, safety systems, etc.
Training at sea

August 2026 - June 2027

Training & boat optimizations

  • Sea trials, iterations and validations
  • Training, team coaching and preparation.

July - September 2027

Expedition

  • Departure in July 2027
  • Arrival in September 2027

October 2027 - May 2028

Post-expedition

  • Promotion of the expedition through a series of events
  • Refit and exhibition of the boat in Lorient and in Paris, on the Seine.

LIGHTNESS

BY LIMITING TECHNICAL MEANS, I ACCEPT MY VULNERABILITY AND FIND AN UNMATCHED CLOSENESS WITH THE ELEMENTS.

Water just inches away, wind on my cheeks and ice at my fingertips. My navigation is to sailing what alpine style is to mountaineering: a small autonomous team, simple and lightweight gear, and a human-sized sailboat bringing me closer to the environment. I accept my vulnerability and find an unmatched closeness with the elements.

SIMPLICITY

MY STRATEGY TO ACHIEVE MY GOAL

In a harsh environment, I choose the simple, robust, and repairable. I adapt to the Arctic environment at every moment and seek to understand it rather than fight it.

SOBRIETY

CROSSING A FRIENDLY ENVIRONMENT WITH DISCRETION

Sobriety is a vision of man in the wild and a travel concept based on autonomy.
Step 1

October 2024 - February 2025

Initialization & Planning

  • Choice and acquisition of the boat
  • Assembly of the crew
  • Theoretical study and routing simulations based on 4 years of archive weather & satellite data
  • Design of technical solutions required for this navigation
  • Management of administrative procedures (authorizations, visas, clearances)
Step 3

August 2026 - June 2027

Training & boat optimizations

  • Sea trials, iterations and validations
  • Training, team coaching and preparation.
Step 5

October 2027 - May 2028

Post-expedition

  • Promotion of the expedition through a series of events
  • Refit and exhibition of the boat in Lorient and in Paris, on the Seine.
Step 2

February 2025 - July 2026

Technical refit on the boat

  • Conveyance of the sailboat to Lorient and refit: complete structural check, reliability enhancement, and weight reduction.
  • Preparation and specific adaptation of the boat: maneuver simplification, sail area expansion, structural reinforcements, pedal drive, safety systems, etc.
Step 4

July - September 2027

Expedition

  • Departure in July 2027
  • Arrival in September 2027

Media

Passing through the North is featured in press, radio, and television.

France Inter

Le Mag de l'été: Passing through the North

France Inter Podcast — Nicolas Marcillaud presents his unassisted Arctic sailing expedition in sea ice.

radiofrance.fr/franceinter/podcasts/le-mag-de-l-ete
France Inter Logo
Ouest-France

"A fast yet robust sailboat": this Lorient sailor attempts to sail around the world via the North Pole

Portrait of Nicolas Marcillaud and spotlight on the refit of the trimaran Paradox in Lorient shipyards.

ouest-france.fr/mer/un-voilier-rapide-mais-robuste
Ouest-France Logo
Rennes Maville

A fast yet robust sailboat: the Lorient challenge towards the North Pole

Spotlight on maritime preparation and low-tech philosophy of the Arctic circumnavigation project.

rennes.maville.com/sport/detail_un-voilier-rapide
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Multihulls World

Multihulls World: Paradox trimaran arctic expedition

Short video introducing the trimaran Paradox under sail and the Passing through the North challenge.

youtube.com/shorts/n3TeXErt1a8
Multihulls World Logo
Multicoques Magazine

Arctic tour under sail in a trimaran

Focus on the 30-foot multihull Paradox refitted to face polar conditions.

multicoques-mag.com/actualites/tour-de-l-arctique
Multicoques Mag Logo
Le Figaro Nautisme

World tour through the Arctic under pure sail: a bold gamble defining our era

Analysis of a committed circumnavigation in polar waters, driven by radical technical choices.

figaronautisme.meteoconsult.fr/actus-nautisme
Le Figaro Nautisme Logo
ICI Breizh Izel

Life stories: Passing through the North

Radio show retracing the story of Nicolas Marcillaud and the meticulous preparation of Paradox in Lorient.

ici.fr/emissions/histoires-de-vies-ici-breizh-izel
ICI Breizh Izel Logo
We Demain

Under pure sail and solo facing Arctic ice: Nicolas Marcillaud's wild challenge

An extraordinary ecological and maritime adventure committed to reuse and sobriety in polar waters.

wedemain.fr/sauver-la-planete/a-la-voile-pure
We Demain Logo
Bateaux.com

Arctic tour in a trimaran: an unattempted circumnavigation project

Technical analysis of naval architecture choices, energy autonomy, and sobriety for navigation.

bateaux.com/article/51568/tour-de-l-arctique-en-trimaran
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Voiles et Voiliers

Arctic: preparing the first world tour under pure sail through the North aboard a former racing trimaran

Detailed presentation of the route through the Northeast and Northwest passages.

voilesetvoiliers.ouest-france.fr/expedition/arctique
Voiles et Voiliers Logo
Voiles et Voiliers

Unusual: with an old trimaran, he plans to sail around the world through the Arctic

A look back at the legendary history of the trimaran Paradox, from Fastnet to polar ice.

voilesetvoiliers.ouest-france.fr/monde/arctique/insolite
Voiles et Voiliers Logo