four o'clock
Presently the captain came on deck , and he appeared to be less nervous than before , perhaps because he had arranged his plan to escape his pursuer . Within an hour Christy recognized the East Isaac , a rock rising ten or twelve feet above the surface of the water , which he identified by its nearness to one over which the sea was breaking . The captain was too much occupied in the study of the surroundings to take any notice of him , and he endeavored to keep out of his sight . The prisoner consulted his watch , and found it was four o'clock . The tower of the Great Isaac light could just be made out . The Chateaugay was not more than four miles astern of the Snapper , and in another hour she would certainly come up with her , if Captain Flanger did not put his plan into execution . The course of the chase continued to bring her nearer to the reefs .