six o'clock
If anything particular happens call me . '' This said , James Playfair went to his cabin . Mr. Mathew called Crockston , and told him the Captain 's orders . `` To-morrow , at six o'clock , '' said he , `` you are to relieve watch of the main masthead . '' For reply , Crockston gave a decided grunt , but Mr. Mathew had hardly turned his back when the sailor muttered some incomprehensible words , and then cried : `` What on earth did he say about the mainmast ? '' At this moment his nephew , John Stiggs , joined him on the forecastle . `` Well , my good Crockston , '' said he .