Sailing
noun, する verb, の adjective
A sail runs boats along the sea by sailing! You can't run along the water unless the sail is out and catching the wind.
はんそう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ほら、あそこにヨットが帆走しているよ。
Look, there’s a yacht sailing over there.