HMS Courageous was a British aircraft carrier launched in 1917 and commissioned into the Royal Navy. Originally designed as a battlecruiser, she was converted to an aircraft carrier after World War I. The ship played a significant role in naval aviation, supporting various operations during her service. During World War II, HMS Courageous was involved in several missions, including the hunt for German U-boats. Unfortunately, she was torpedoed by a German submarine, U-29, on September 17, 1939, leading to her sinking. The loss of the ship marked a significant moment in the early stages of the war.