Search Results for: Sea urchins
devised by british rear-admiral, sir francis beaufort in based on observations of the effects of the wind. force wind (knots) wmo classification appearance of wind effects on the water on land less than calm sea surface smooth and mirror-like calm, smoke rises vertically - light air scaly ripples, no
dust, leaves, and loose paper lifted, small tree branches move - fresh breeze moderate waves - ft taking longer form, many whitecaps, some spray small trees in leaf begin to sway - strong breeze larger waves - ft, whitecaps common, more spray larger tree branches moving, whistling in wires - near gale sea...
http://www.enmar.com/cio/resim/upload/files/Beaufort-Wind-Scale.pdf