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Preparation for Sea


Beaufort Force The Beaufort wind scale is the standard way to assess wind strength.


1. Light airs 1–3 knots. Ripples. Sail – drifting conditions.


2. Light breeze 4–6 knots. Small wavelets. Sail – full mainsail and large genoa.


6. Strong breeze 22–27 knots. Large waves, white foam crests. Sail – reef main and reduce headsail.


7. Near gale 28–33 knots. Sea heaps up, spray, breaking waves, foam blows in streaks. Sail – deep reefed main, small jib.


3. Gentle breeze 7–10 knots. Occasional crests. Sail – full sail.


8. Gale 34–40 knots. Moderately high waves, breaking crests. Sail – deep reefed main, storm jib.


9. Severe gale 41–47 knots. High waves, spray affects visibility. Sail – trysail and storm jib.


4. Moderate 11–16 knots. Frequent white horses. Sail – reduce headsail size.


5. Fresh breeze 17–21 knots. Moderate waves, many white crests. Sail – reef mainsail.


10. Storm 48–55 knots. Very high waves, long breaking crests. Survival conditions.


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