Repeat 1 Flashcards
(30 cards)
F1
Light air / 1-3 knots
F2
Light breeze / 4-6 knots
F3
Gentle breeze / 7-10 knots
F4
Moderate / 11-16 knots
F5
Fresh breeze / 17-21 knots
F6
Strong breeze / 22-27 knots
F7
Near gale / 28-33 knots
F8
Gale / 34-40 knots
F9
Severe gale / 41-47 knots
F10
Storm / 48-55 knots
F11
Violent storm / 56-63 knots
F12
Hurricane / > 64 knots
Smooth
Wave height less than 0.5 m
Slight
Wave height of 0.5 to 1.25 m
Moderate
Wave height of 1.25 to 2.5 m
Rough
Wave height of 2.5 to 4.0 m
Very rough
Wave height of 4.0 to 6.0 m
High
Wave height of 6.0 to 9.0 m
Very high
Wave height of 9.0 to 14.0 m
Phenomenal
Wave height more than 14.0 m
Very poor
Visibility less than 1,000 metres
Poor
Visibility between 1,000 metres and 2 nautical miles
Moderate (Visibility)
Visibility between 2 and 5 nautical miles
Good
Visibility more than 5 nautical miles