It's the question I get most often since announcing the expedition. It implies another, more honest question: could my boat do this? The answer, in most cases, is no. Not because sailors lack courage — but because standard cruising yachts aren't designed for the high southern latitudes. Here's why, and what it actually takes.

The problem with modern cruising yachts

Modern cruising yachts are optimised for comfort, racing performance, and ease of use. Lightweight fibreglass hulls, flat bottoms for downwind performance, deep keels for upwind performance. These characteristics are assets in the Mediterranean or even on an ocean crossing. In Antarctica, they become liabilities.

Fibreglass and ice. In Antarctica, bergy bits and growlers — capsized iceberg fragments — float at the surface with almost no freeboard. Sometimes 20 to 30 centimetres above the waterline. Their underwater mass can reach several tonnes. A fibreglass yacht that hits a growler at 5 knots breaks. Aluminium and steel absorb the impact — or at worst deform locally without immediate breach.

Flat bottoms and Drake seas. A 4–5 metre cross-swell in the Drake Passage is brutal for a flat-bottomed yacht optimised for speed. Rolling is rapid and violent, heel is aggressive, crew fatigue is massive. A bluewater yacht with a rounded hull and heavy displacement absorbs long-period swell better — it rolls more slowly, more regularly.

Deep keels in Antarctica. Sailing in ice, in bays, or at anchor in Antarctica often means poorly-charted waters. A 2.5m draught is already limiting. Beyond 3m, some anchorages become impossible.

What a polar yacht must have

1. Aluminium or steel hull

This is the non-negotiable criterion for serious sailing in Antarctica. Aluminium is preferred over steel for sailing expeditions: lighter, superior marine corrosion resistance, and repairable with a portable welder on board.

Reference yachts in the high southern latitudes — from Ovni to Garcia, Boréal to Alubat — all have aluminium hulls. Not by accident.

ARION is a Strongall 47-foot aluminium yacht. The Strongall design is specifically offshore: high-displacement hull, high freeboard, tiller steering (no wheel — fewer mechanical parts to break). Seventeen tonnes.

2. Stability and displacement

A polar yacht must be heavy. Stability in formed seas comes from the weight-to-hull-shape ratio, not from speed. In the Screaming Sixties with 8–10 metre swells, a light yacht is tossed. A heavy yacht rolls, but rolls regularly — and comes back.

The lifting keel, like ARION's, is an interesting compromise: keel down gives stability and upwind ability; raised, it reduces draught for shallow anchorages.

3. Powerful and redundant autopilot

Single-handed or as a pair, it's impossible to hand-steer for 5 days in the Drake or weeks in the Southern Ocean. The autopilot is critical.

A hydraulic pilot dimensioned for the actual displacement of the boat is essential. Plus a mechanical backup (tiller pilot or secondary ram) for when the main pilot fails.

On ARION, the Raymarine autopilot is coupled to tiller steering — a simple, robust, on-board repairable system.

4. Sails suited to strong wind

Polar yachts have a conservative sail plan: modest area, ability to reduce quickly, multiple headsails for different conditions.

Minimum sail kit for Antarctica:

  • Mainsail with 3 reefs (or 2 deep reefs)
  • Self-tacking jib (for single-handed sailing) OR roller furling genoa on releasable stay
  • Staysail on inner forestay — the working sail in strong wind
  • Storm jib — for extreme conditions, with any luck never needed

ARION's sail kit for the circumnavigation is one of the outstanding critical points — we're still seeking a sail partner.

5. Autonomous energy

In Antarctica, the engine can't run continuously to charge batteries. You need an autonomous energy system capable of sustaining the expedition in complete self-sufficiency.

The efficient combination for the Southern Ocean:

  • Solar panels: effective in the austral summer when skies are clear (it happens)
  • Wind generators: highly effective in windy latitudes — in the Fifties and Sixties, the wind almost never stops
  • Hydrogenerator: towed behind the boat underway, it generates power from 4–5 knots of boatspeed. In the Drake and Southern Ocean, this is often the primary source

On ARION, this combination charges LiFePO4 battery banks. Energy management at sea is monitored in real time by Mousaillon, the onboard AI.

6. Redundant satellite communications

In the Southern Ocean, there's no GSM coverage. Communications are satellite-based. Redundancy is mandatory.

  • Starlink Ocean: primary link. Very high bandwidth, ideal for weather GRIBs, regular communications, live expedition tracking. Works well to high southern latitudes. Can be unavailable in case of hardware failure or degraded coverage.
  • Iridium GO!: backup. Limited bandwidth (email, SMS, basic weather), but global coverage including the poles. When Starlink goes down, Iridium takes over.

7. Reliable heating

Crew hypothermia = end of expedition. A polar yacht must have reliable heating, capable of maintaining a liveable temperature inside even with −10°C outside and constant humidity.

Diesel heating (Webasto, Espar) is the reference: it heats ambient air, is independent of ship's power, and uses the same fuel as the engine.

Reference yachts for sailing in Antarctica

A few models that have proven themselves in the high southern latitudes:

Aluminium bluewater: Boréal 47/52, Garcia Exploration, Alubat Ovni (offshore series), Amel (certain models). These yachts are designed for the Grand Tour — range, solidity, capacity to sail in all conditions.

Steel bluewater: Hallberg-Rassy (certain models), Bowman. Heavier than aluminium, but proven in high latitudes.

Custom yachts: many historical Antarctic expeditions were completed on boats built or heavily modified for the purpose. Often the best solution — but also the most expensive.

ARION falls into the aluminium bluewater category. The Strongall 47 is a limited-production series yacht, designed by and for sailors who wanted to go far and stay long.

What a polar yacht is not

A polar yacht is not a racing performer. It doesn't average 9 knots upwind. It doesn't win coastal races.

It's a tool designed to last. To absorb hits. To be fixable on board with basic tools. To return from places others don't go.

It's not a yacht that turns heads in a marina. It's a yacht that comes back from Antarctica.

ARION came back from Patagonia. She'll go to Antarctica. And she'll come back.