Clouds and Cloud Formations

On yachts of any size and type most crew will do a lot of cloud observations during watches.  I have found over the years I have a far idea on what the clouds means through shear thousands of hours of sky watching.  But to make it easy here are some You Tube clips explaining whats going on.  I love the second one even though it is long, so vintage as obviously it is lol!
A great Wiki link into clouds and there meanings ......

You Tube Clip;

I love this film from the US Defence Department, so vintage