The Yokosuka D4Y was a Japanese dive bomber used during World War II. Designed by Yokosuka Naval Air Technical Arsenal, it first flew in 1941 and was known for its speed and agility. The aircraft was primarily used by the Imperial Japanese Navy and played a significant role in various battles, including the Battle of the Philippine Sea. The D4Y was equipped with a powerful engine and could carry a substantial bomb load, making it effective in ground attacks. Its design featured a low-wing monoplane structure, which contributed to its performance. The aircraft was also known by its Allied reporting name, "Judy."