About five o'clock
Mess was served at noon while the _ Dewey _ kept on her run . Coffee and biscuits made up the frugal meal this time , the officers and crew being anxious to prove the submersible ready for any emergency call that Uncle Sam might make , and not desiring to spare the men from their posts longer than possible . All afternoon the _ Dewey _ ploughed the waves , sometimes running submerged , other times on the surface . About five o'clock the boys perceived the lighthouse at the bay entrance , and soon they were back in the navy yard . Their letters home that night thrilled with accounts of their first dive under the ocean , and in their dreams the boys were sharing all manner of wonderful exploits against the foe on the boundless sea . For several weeks the Brighton recruits were kept busily at the business of mastering submarine navigation . In the distribution of the crew throughout the vessel Jack and Ted found themselves assigned under the leadership of Chief Gunner Mowrey .