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Hazard spot

Biscay: storm season: Severe storms

Biscay: storm season: The shelf makes the Atlantic swell stand up steeply, and gales are routine in winter. For a delivery south the weather window matters more than the size of the boat.

Cause
Severe storms
Main season
October to March
Position
45° 30,0' N 006° 00,0' W
Severe storms · October to March

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Biscay: storm season: how the place works

The continental shelf rises steeply off the French and Spanish coast, and the long Atlantic swell stands up over it. Three metres in open water become short, breaking six over the shelf. Between October and March gales are routine here; in summer the bay is a different place altogether.

Biscay: storm season: what breaks there

The typical Biscay file is not a collision but a delivery: rig, steering gear and fittings do not survive the sustained loading, water finds its way through hatches and vents, and electronics fail. Boats are rarely lost, but they arrive expensive.

Biscay: storm season: what this means for your policy

For a delivery south the weather window matters more than the size of the boat, and that is exactly what conditions ask about: season, crew numbers, experience. Check whether your policy covers deliveries at all and whether it requires a minimum crew.

Read this in full: The duty starts with the warning

Cruising range

In the calculator this spot falls under EU inland waters

Calculate a premium for this cruising range

Nearby

And what applies right now?

This page shows what always holds here; live official warnings are on the warning map.

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An owner in yellow foul-weather gear makes fast a second mooring line as storm clouds gather

Storm on the way

Lines doubled, head clear.

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