The aircraft carrier’s are possibly the loudest ship to try and sleep and work on. Such as midnight lying in my rack as a plane is launched of the catapults and all the mechanical and steam noises, during flight ops. Or when the Diesel Generators are running and having to wear earplugs with earmuffs to reduce the noise. Then the Engine rooms and hearing the roar of the A/C vents, and Main Engines as it propels the ship forward. Then the lapping sounds of water hitting the side of the ship as we move through the water.