An aircraft carrier has a speed of 16.4 m/s relative to the water. A jet is catapulted from the deck and has a speed of 59.3 m/s relative to the water. The engines produce a 1570-Hz whine, and the speed of sound is 343 m/s. What is the frequency of the sound heard by the crew on the aircraft carrier? Assume that the aircraft carrier and the jet are both moving in the same direction.