CONVENIENT METHOD OF HANDLING STEAMING DATA
By Lieutenant Jules James, U. S. Navy
To provide a ready means of obtaining steaming data in convenient form the curves below were prepared for one of the ships. With this set of curves and a report of coal on board, the commanding officer will have, ready at hand, all the data necessary to solve the steaming problems which arise from time to time.
These curves were all made from data obtained from a performance sheet furnished by the Office of Gunnery Exercises and Engineering Performances. This performance sheet, illustrated in Fig. 1, was made from actual steaming data recorded during the years 1910 to 1917 and represents performance under all sorts of conditions of coal, boilers, bottoms, weather, etc. A similar sheet is furnished to all vessels of the navy.