four o'clock
Within a short time we were under way again . The usual watches were set , but very few of the boys went below . The mere rumor that the enemy was prowling along the coast was enough to prevent sleep . My watch went on duty at four o'clock . We were not called in the usual way , by the boatswain 's whistle , but each man was roused separately . This in itself was sufficient to lend an air of intense interest to the scene . On reaching the deck I found that the night had grown stormy .