TABLE 7. VISIBILITY 



Code 



Dense fog 50 yards 



1 Thick fog 200 yards 



2 Fog 400 yards 



3 Moderate fog 1000 yards 



4 Thin fog or mist 1 mile 



5 Visibility poor — 2 miles 



6 Visibility moderate — -, 5 miles 



7 Visibility good 10 miles 



8 Visibility very good 30 miles 



9 Visibility excellent Over 30 miles 



TABLE 8. WATER COLOR 



Code (Percent yellow) Description 



00 Deep blue 



20 Greenish-blue (or green blue) 



30 Bluish-green (or blue green) 



40 Green 



50 Light green 



60 ■ Yellowish-green 



70 Yellow green 



80 Green yellow 



90 Greenish-yellow 



99 Yellow 



103 



