Although the air was clear, there was no moon, and with the sea so calm, there was nothing to give away the position of the nearby icebergs; had the sea been rougher, waves breaking against the icebergs would have made them more visible. Because of a mix-up at Southampton, the lookouts had no binoculars; however, binoculars reportedly would not have been effective in the darkness, which was total except for starlight and the ship's own lights. The lookouts were nonetheless well aware of the ice hazard, as Lightoller had ordered them and other crew members to "keep a sharp look-out for ice, particularly small ice and growlers".