The _Livadia_ possesses powerful propelling engines. There are three sets of these, each with three cylinders, the diameter being sixty inches for the high pressure, and seventy-eight inches for the low, with a stroke of three feet three inches. As much strength and lightness as possible have been secured for the propellers by constructing them of manganese iron; while steel has been largely employed for the engines and boilers, which are, for their weight, the most powerful possessed by any vessel. The estimated horse-power is 10,500, and the ship, under favourable conditions, can make fifteen knots an hour. The double water-tight bottom of the _Livadia_ is three feet six inches deep at the centre, and two feet nine inches at each end. In this turbot-like lower part is the machinery, and it is the receptacle also for coals and stores of all kinds. The twofold bottom of the ship comprises forty compartments, and the whole is sufficiently strong, it is believed, to withstand the heaviest weather to which the yacht is likely to be exposed, as well as the strain of her powerful machinery. The entire length of the upper part of the ship, in which are the imperial apartments, and the quarters of the officers and crew, is 260 feet, and the breadth 110 feet. The crew all told numbers 260. The private apartments of the Czar himself are forward on the main-deck, well away from the heat of the engines and the smell of the machinery. A visitor to the ship is chiefly struck, perhaps, by the height to which the decks rise above the hull, the uppermost compartment of all being fitted out as a reception saloon, in the centre of which a little fountain rises out of a bed of flowers. This portion of the vessel is forty feet above the level of the sea. The apartment is luxuriously appointed in the fashion of the reign of Louis XVI. The drawing-room is furnished in a style of equal sumptuousness, in the Crimean Tartar style; but the rest of the imperial apartments are in a simpler order of decoration. Behind the funnels there is another deck-house, containing the captain's quarters and rooms for the Grand Duke Constantine. It will thus be seen that the _Livadia_ is literally a floating palace, equipped and decorated with that almost Eastern love of sumptuous display which characterises the Russians as a people. All the three screws with which the _Livadia_ is furnished are wholly submerged in the water--another novelty in the construction of the vessel. One or even two of these screws might suffer serious injury and the ship still remain manageable.