The _Triad_ measures 250 feet long, between perpendiculars, and 35 feet wide, and is equipped with twin-screw engines, which give her a speed of 16 knots. She has two double-ended boilers, and one auxiliary boiler for driving the electric installation when in port. Some of her minor features are sufficiently unusual to merit remark. Thus, for instance, the windlass on her forecastle is fitted with a special indicator which shows the amount of cable run out, and an arrangement something similar in principle to that mentioned as existing on liners is installed, whereby the engineer cannot easily make a mistake in carrying out the captain’s orders from the bridge. If the engines are going ahead the captain knows this by an electric lamp which shows red; if they are going astern the lamp shows green, the movement of the engines themselves indicating automatically. In matters of personal comfort this miniature liner is amply fitted. Besides the usual accommodation, she has dining-room, drawing-room, music-room, maids’ room and ample bedrooms, all upholstered and furnished with due regard to modern luxury. It would be impossible within the limits of our subject to refer in detail to all those magnificent stately steam yachts which are afloat in European and American waters. Such vessels as the _Vanadis_, with her 1,233 tons (Thames measurement), triple-screws and triple turbines built in 1908; the well-known _Ioland_, built for Mr. Morton F. Plant of New York, by a Scotch firm; the _Wakiva_, twin-screw steam yacht, the _Lysistrata_, the _Liberty_, are representative of the magnificent fleet which has come into being so speedily, in spite of the chilly reception and opposition which greeted the steam yacht during the first half of the past century. The _Liberty_, something of whose internal comfort we shall show in another chapter, is of 1,571 tons, was launched in December of 1907, and is one of the most notable productions of recent years. She is spar-decked throughout, with magnificent lines and a handsome appearance, whilst retaining the more conventional stem-plus-bowsprit. She has exceptional accommodation, all connected by corridors and vestibules with no fewer than a dozen state-rooms for guests. She is driven by two sets of triple-expansion engines actuating twin-screws, which, to minimise vibration, are at a different pitch, and run at varying speeds. She can carry sufficient coal to allow her to cruise for 6,000 miles, and both in internal and external appearance is as handsome as she is capable. [Illustration: THE S.Y. “SAGITTA.” _From a Photograph. By permission of Messrs. Camper & Nicholson, Ltd._] [Illustration: THE S.Y. “TRIAD.” _From a Photograph. By permission of the Caledon Shipbuilding Co., Ltd._]