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SECTION 70. WIND FORCE AND VELOCITY SCALES AND STATE OF THE SEA

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Wind force

SECTION 70. WIND FORCE AND VELOCITY SCALES AND STATE OF THE SEA-Continued

State of the surface of the sea with wind waves

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SECTION 70. WIND FORCE AND VELOCITY SCALES AND STATE OF THE SEA-Continued

Description

State of the surface of the sea with wind waves
State of the sea,

Beaufort Scale

points

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Waves become mountainous, with fairly
long crests. Edges of crest begin to break
into spindrift. Dense streaks of foam in
wind direction. Sea rolls at times.

Very high mountainous waves with long
overhanging crests. Foam in wide, dense
streaks along the direction of the wind.
Rolling of the sea becomes heavy and
shocklike. Sea surface becomes white with
foam. Visibility affected.

Waves so high that ships are at times lost to
view. Everywhere the edges of the wave
crests are blown into froth. The sea is com-
pletely covered with patches of foam. The
wind, breaking the wave crests, carries foam
and spray, filling the air and seriously affect-
ing visibility.

SECTION 71. DISTANCE IN NAUTICAL MILES BY TIME AND SPEED

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SECTION 72. TIME IN MINUTES ACCORDING TO DISTANCE AND SPEED

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