The vessel was designed in four compartments, with a steel bulkhead between each of the divisions, so that in case of accident it would be possible to keep her afloat. Aft was the little chart-room, which was the pride of the ship. When we went on board magnificent yachts which could have carried our little vessel as a lifeboat, and found the navigation being done in the public rooms, we smiled with superiority. Out of the chart-room were the navigator’s sleeping quarters, and in the overhang of the stern the sail-locker. The next compartment was given to the engines, and made into a galvanised iron box in case of fire. It contained a motor engine for such work as navigation in and out of harbour and traversing belts of calm. This was of 38 h.p. and run on paraffin, as petrol was disallowed by the insurance; it gave her 5½ knots. In the same compartment was the engine for the electric light: in addition the yacht had steam heating. The spaces between the walls of the engine-box and those of the ship were given to lamps, and to boatswain’s stores. Then came the centre of the ship, containing the quarters of our scientific party. The middle portion of this was raised three or four feet for the whole length, securing first a deck-house and then a heightened roof for the saloon below, an arrangement which was particularly advantageous, as no port-holes were allowed below decks, leaving us dependent on skylights and ventilators. Entering from without, two or three steps led down into the deck-house, which formed part of the saloon, but at a higher level; it was my chief resort throughout the voyage. On each side was a settee, which was on the level of the deck, and thus commanded a view through port-holes and door of what was passing outside; one of these settees served as a berth in hot weather. A small companion connected the deck-house with the saloon below: the latter ran across the width of the ship; it also had full-length settees both sides, and at the end of each was a chiffonier. On the port side was the dinner-table, which swung so beautifully that the fiddles were seldom used, and the thermos for the navigating officer could be left happily on it all night. Starboard was a smaller table, fitted for writing; and a long bookshelf ran along the top of the for’ardside (fig. 1^A).