Why is the word Yacht pronouced Yott?

Answer 1

I agree with Bear - silent letters, yes - but it's also prenounced many different ways. It depends on what part of the coutry you're in.
"Yott" is only because it's the way we speak ;)

Answer 2

yacht [yot]
[Mid-16th century. From obsolete Dutch jaghte , a shortening of jaghtschip “chasing ship.”]
I hope this helps

Answer 3

It's not in Germany.

Answer 4

silent letters