First and foremost there are the warrant officers, pre-eminent among whom are the boatswain, gunner, and carpenter, three time-honoured titles. The first-named may be regarded as the commander's right-hand man, and has multifarious duties and responsibilities. The duties of the other two are sufficiently indicated by their titles. Then there are engineer warrant officers, and of late years marine warrant officers known as "Royal Marine gunners". The "sergeant-major" of marines, which is the courtesy title borne by the senior non-commissioned officer of the corps on board, is also a man of considerable importance on a man-of-war. Then there are the chief petty officers, and petty officers such as the yeoman of signals, the chief quartermaster, chief boatswain's mate, and many others, together with sailmaker, blacksmiths, armourers, electricians, coopers, cooks, bandsmen, plumbers, and all kinds of ratings whose presence on board His Majesty's ships and vessels of war is little suspected by the man in the street. Then there is the ship's police, headed by the master-at-arms or "jaundy".[80] These men are recruited from all branches of the navy, and perform much the same duties as the "bobby" on shore, look after the prisoners in cells, and are supposed to detect all irregularities that may take place on board and to bring the delinquents to justice. If a ship is a flagship there is naturally a more important personage on board than any of the officers whose ranks and duties have been detailed--the admiral in command of the fleet or squadron. He may be a full admiral--the highest rank employed afloat--a vice-admiral, or a rear-admiral, the difference in rank being indicated by the number of stripes on the cuff of his coat, placed above the lower very wide stripe of gold lace. Thus a rear-admiral has one narrow stripe above it, with the executive curl, a vice-admiral two additional narrow ones, and an admiral three. The admiral lives in a regular suite of cabins, generally right aft, consisting of a dining-room or fore-cabin, a sitting-room or after-cabin, and two or three sleeping cabins. The captain of a flagship is known as the flag-captain, and he, with the flag-lieutenant, secretary, and sometimes an officer of marines, form the admiral's staff. All these officers are distinguished from the rest of the officers in the squadron by wearing aiguillettes. The captain, of course, has to command his ship like other captains, but the secretary, who is a staff-paymaster or paymaster told off for this special duty, is the admiral's right-hand man as regards the tremendous amount of paper work connected with the command of a fleet or squadron. The flag-lieutenant is the admiral's personal aide-de-camp and so is specially to the fore, both in the big man's inspections of ships and naval establishments and in social duties and functions. He is also an authority in connection with signalling in its various branches, and