SS Saint-Laurent was an ocean liner operated by Compagnie Générale Transatlantique (CGT) in transatlantic service.
[1][2] Her design was based on the Cunard Line's RMS Persia, albeit adapted to screw propulsion.
[2] She was launched in 1866, and entered service on CGT's route between Le Havre and New York City, before sailing to Central America later in her career.
[1] She was originally built with a single compound steam engine driving one screw and a three-masted sailing rig, capable of propelling her to a 12 knots (14 mph) service speed; in 1875 and 1876 she received new triple expansion engines.
[1] Her screw propulsion was a major improvement over CGT's existing paddlewheel steamships, and spurred the company to convert most of its fleet in North Atlantic service to screws.