Cross-Section of the steamship La Champagne showing the engine rising as high as the main deck while the various levels are peopled with mechanics, maids, and passengers in the cabins and on the promenade.
La Champagne was equipped with three Wolf triple-expansion engines driving a single screw propeller with a 23 ft (7 m) diameter. She could do 17.5 knots (20 mph/32 km/h) and complete the transatlantic crossing between Le Havre and New York in seven and a half days.
The detailed caption reads as follows:
a. Small cylinder. — b. Large cylinder. — c. Driving shaft. — d. Bend of the driving shaft. — e. Connecting rod. — f. Piston rod. — g. Condenser. — i. Device operating the shift to reverse/forward.
The full caption reads in the original French:
Coupe transversale de La Champagne par la chambre des machines.
a. Petit cylindre. — b. Grand cylindre. — c. Arbre moteur. — d. Coude de l’arbre. — e. Bielle. — f. Tige du piston. — g. Condenseur. — i. Appareil manœuvrant le changement de marche.