Visibility Scale

Scale Description Limit of visibility 0 Dense fog 50 yards 1 Thick fog 300 yards 2 Fog 600 yards 3 Moderate fog J mile 4 Mist of thin fog 1 mile 5 Poor visibility 2 miles 6 Moderate visibility 5 miles 7 Good visibility 10 miles 8 Very good visibility 30 miles 9 Exceptional visibility over 30 miles

Beaufort Scale

The following table is the Beaufort Wind Scale, used to classify and measure the force and speed of various strengths of wind.

Force Wind Sea Land

Speed Conditions Conditions m.p.h. J

Calm

Under 1 No ripples on surface

Light Air _ 1-3 Patches of ripples on surface

Light Breeze 4-

Surface ripples and waves upto12 inches

I

Gentle Breeze 8-

Small waves and occasional white horses

Moderate Breeze 13- 4-5ft. Waves White horses common

Sea Disturbance Scale

Scale Description Height of wave, crest to trough, in feet 0 Calm 0 1 Calm 2 Smooth I 4 3 Smooth 2 4 Slight 3J 5 Moderate 6 6 Rough 91 7 Very rough 131 8 High 18 9 Very high 23 10 Very high 29 11 Phenomenal 37 12 Phenomenal over 45

Fresh Breeze 19-24 Crested waves of 6-8 ft. with spray Strong Breeze 25-31 Waves 8-12 ft. with crests foaming

Moderate Gale 32-33 Foaming crests. Waves 12-16ft. Breaking in gusts 39-

Fresh Gale

Sea rough.

Waves 20-25 ft. ‘Boiling’ patches

Strong Gale 47-54 Sea covered in white foam.

Waves 25-30 ft.

Visibility reduced by spray

National Angling Organisations

Major national organisations which may be of use to anglers, depending on their particular angling specialisation, are listed below.

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