six o'clock
But brightly the cross shone above him as long as they could see , and just before he stepped into the darkness where the road turned he paused , waved his hat , and so passed on out of their sight . The first night on the water was one of unspeakable horror to Cameron . They had scarcely begun to feel the roll of the waves before Captain Wurtz manifested his true nature . At six o'clock and broad daylight , he ordered the men below , had them locked in , and all the port holes closed ! The place was packed , the heat was unbearable , the motion increasing all the time , and the air soon became intolerable . In vain the men protested , and begged for air . Their requests were all denied .