HMAS Melbourne only had a 5 degree angle. To recover aircraft, the 'fish heads' would steer the ship so that the wind was down the angled deck. In calm winds, as Intruder alluded to, the wind would be axial causing turbulence off the ship's 'island' (and a whiff of stack gas through the open overhead hatches if you were in a Tracker). Calm conditions on a moonless night were, to my mind, the most challenging for getting back on board!