Both "an yacht" and "a yacht" are technically correct, but "a yacht" is more commonly used. The word "yacht" starts with a consonant sound "y", so "a yacht" is the standard way to introduce the word in a sentence.
Both "an yacht" and "a yacht" are technically correct, but "a yacht" is more commonly used. The word "yacht" starts with a consonant sound "y", so "a yacht" is the standard way to introduce the word in a sentence.