US Sailing level 2 chapter 4 wind, weather tides
and current CORRECT 100%
wind velocity - ANSWER speed of wind
How is wind measured? - ANSWER mph or nautical miles per hour knots
lift - ANSWER the wind's direction shifts from the bow towards to the stern
header - ANSWER wind shifts towards the bow
light wind - ANSWER 0-10 knots smooth water with small waves. the boat will be easy to handle under
full sail
medium wind - ANSWER 11-16 knots moderate seas with some white caps. if the boat feels
overpowered, consider reefing one of the sails for a more comfortable ride
heavy wind - ANSWER 17-21 knots lighting waves with may white caps and some spray. Boat will become
more difficult to manage and you should seriously consider reffing
Very heavy wind - ANSWER 22-27 knots large waves, many white caps, and spray. Boat will need at least
one reef in the mainsail and a smaller jib. these conditions require considerable sailing experience. listen
to radio weather reports for small craft advisories
Serve wind - ANSWER 28-47 knots Gale conditions. high waves with white caps and foaming waves. this
is a good time to stay ashore!
Land effects - ANSWER Wind conditions that are affected by nearby land features such as islands, tall
buildings.
and current CORRECT 100%
wind velocity - ANSWER speed of wind
How is wind measured? - ANSWER mph or nautical miles per hour knots
lift - ANSWER the wind's direction shifts from the bow towards to the stern
header - ANSWER wind shifts towards the bow
light wind - ANSWER 0-10 knots smooth water with small waves. the boat will be easy to handle under
full sail
medium wind - ANSWER 11-16 knots moderate seas with some white caps. if the boat feels
overpowered, consider reefing one of the sails for a more comfortable ride
heavy wind - ANSWER 17-21 knots lighting waves with may white caps and some spray. Boat will become
more difficult to manage and you should seriously consider reffing
Very heavy wind - ANSWER 22-27 knots large waves, many white caps, and spray. Boat will need at least
one reef in the mainsail and a smaller jib. these conditions require considerable sailing experience. listen
to radio weather reports for small craft advisories
Serve wind - ANSWER 28-47 knots Gale conditions. high waves with white caps and foaming waves. this
is a good time to stay ashore!
Land effects - ANSWER Wind conditions that are affected by nearby land features such as islands, tall
buildings.
