(Top)  In order to produce the required steam to drive the ship at her record-breaking speed, Lusitania was designed with 23 double-ended and 2 single-ended boilers. These boilers produced steam at 195 per square inch.

(Middle)  This was the only boiler seen during the expedition.  Located in the port forward end of the No 4 boiler room, this was one of the boilers that had been shut down in an effort to conserve coal during the final voyage.

(Bottom)  A four-foot-long model of Lusitania’s machinery spaces lent to the expedition by Paddy O’Sullivan.  The arrow indicates the boiler that was seen by Jason through the break in the hull.