in tanks (marked O) of various sizes, on account of their having to be placed among the numerous diagonal stays.  The tanks are filled and emptied by means of a pump and a petroleum hose through a manhole in the top, over which, again, are hatches in the deck above; no connecting pipes are fitted between the different tanks, for fear they might be damaged by frost or shock, thus involving a risk of losing oil.  The main supply tank for fuel is placed over the forward side of the engine-room, where it is supported on strong steel girders; inside this tank, again, there are two smaller ones —­ settling tanks —­ from which the oil is conveyed in pipes to the engine-pumps.  The main tank is of irregular shape —­ as will be seen from the drawing —­ since a square piece is taken out of its starboard after-corner for a way down into the engine-room.  Besides this way down, an emergency way leads up from the engine-room, right aft, to one of the after-cabins.  The oil hold is closed forward by a watertight bulkhead, which goes up to the main-deck.  The hold forward of the oil-supply is unaltered, and serves for stowing cargo (mainly provisions), as does the hold above the oil-supply and below the main-deck.

On the main-deck right aft we now find a space arranged on each side of the well for the propeller and rudder; the lower part of this space is occupied by two tanks for lamp-oil, and above the tanks is a thin partition, which forms the floor of two small sail-rooms, with hatches to the deck above.  Around the mizzenmast is the after-saloon, with eight cabins leading out of it.  From the forward end of the after-saloon two passages lead to the large workroom amidships.  These passages run past what were formerly coal-bunkers, but are now arranged as cabins, intended only to be used in milder climates, as they are not provided with any special insulation.  From the port passage a door leads to the engine-room companion.  In the after-part of the large workroom is the galley.  This room is entirely lined with zinc, both on walls and ceiling (on account of the danger of fire), while the deck is covered with lead, on which tiles are laid in cement.  Forward of the galley is the main hatch, and two large water-tanks are fitted here, one on each side.  The remainder of the workroom affords space for carpenter’s benches, turning-lathes, a forge, vices, etc.  From the workroom two doors lead into the fore-saloon with its adjoining cabins.  Amundsen’s cabin is the farthest forward on the starboard side, and communicates with an instrument-room.  From the fore-saloon a door leads out forward, past a sixth cabin.

In the space forward on the main-deck we have the fore-hatch, and by the side of this a room entirely lined with zinc plates, which serves for storing furs.  Forward of the fur store is fitted a 15 horse-power one-cylinder Bolinder motor for working the capstan; the main features of its working will be seen in the drawing.  There are two independent transmissions:  by belt and by chain.  The former is usually employed.  The chain transmission was provided as a reserve, since it was feared that belt-driving might prove unserviceable in a cold climate.  This fear, however, has hitherto been ungrounded.