Live AIS VesselTracker

Track the Newlyn fishing fleet at sea.

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Newlyn Fish Market - boats due to land.

Weather Info

Hold the cursor over the direction arrows for further details.

WaveNet, Cefas’ strategic wave monitoring network for the United Kingdom, provides a single source of real-time wave data from a network of wave buoys
Click here to see the page of interactive wave data.

The Beaufort Scale in fishing videos.

Force: 0







Winds in excess of Force 12 (Hurricane)

The Beaufort Scale (0-12) was originally based on a written description of the appearance of the sea for the benefit of sailors recording their voyages and for reference. Consequently, once the wind reaches 70 knots the sea state changeschanges little - here is a fishing boat in 96 knots of wind off the west coats of Scotland.

It does not take into account the effect that a swell (ground sea) has on the size of the waves. In bad weather – anything over force 8 in sheltered waters – like the Irish Sea - the waves are very steep and the product of the wind 'wind-sea' – they can dissipate as quick as the wind does. Waves that travel long distances are the product of a prevailing wind have a much greater ‘fetch’ (the distance they travel) and produce a swell that is a huge energy store – which is why we have such good surf in Cornwall (as does the west coast of Ireland) with waves that begin life off the eastern seaboard of the USA and travel 3,000 miles across the NE Atlantic.

In storms where the wind direction changes quickly the sea can become confused - producing pyramid waves that can rear up and disappear - very dangerous to smaller vessels that can capsize in such seas.

Sometimes you can get a 20ft swell and the sea surface looks like glass with no wind - this happens sometimes in summer fogs off Cornwall.  The other significant factor is the depth of water - especially in shallow water channels where the tide might be very storing - as in the notorious Pentland Firth off the NE coast of Scotland and the Raz de Sein off Brittany.
When caught in a storm, pwere vessels can 'dodge' - set a course directly into the wind to reduce the chance of capsize. Running for shelter with a following sea can be very dangerous as a vessel can broach - turn very quickly side-on and get rolled over.