view of the atlantic ocean in brittany in france

brittany storm atlantic ocean high waves stormy sea coast weather sea swell wind force nature tides storm surge coastline ship navigation rescue operation coast guard breakwater weather warning sailor shipwreck rough nautical phenomenon cliffs navigation hazards ship traffic lighthouse lifeboat travel nautical chart wind strength instruments water masses seaworthiness seamanship wave height coastal region system tidal currents danger dangerous inhabitants current conditions strong winds off brittany france strong autumn france very waves winds