The SS Laurentic was an 18,724 GRT steam ocean liner constructed in 1927 by Harland and Wolff in Belfast for the White Star Line. Notably, she was the last steamship built for the company and represented a departure from typical White Star design and procurement practices, being ordered within a defined budget and built with hull number 470, suggesting a prolonged and unusual construction process. She measured approximately 578.2 feet in length and 75.4 feet in beam, featuring a distinctive profile similar to her predecessors but slightly larger. Her propulsion system employed "combination machinery," with twin four-cylinder triple-expansion steam engines driving two screws, and a low-pressure steam turbine powering a third screw, allowing her to cruise at about 16.5 knots. Her interior was designed for passenger comfort, with accommodations for 594 in cabin class, 406 in tourist class, and 500 in third class. Amenities included lounges, a veranda café, gymnasium, and children's playroom, with luxurious cabins decorated in Louis XIV to Louis XVI styles. The ship's layout featured two funnels, with her aft funnel connected to a boiler room, and her lifeboats arranged in two rows of seven on each side. Initially serving the Liverpool-Canada route, Laurentic made her maiden voyage in November 1927, later expanding to Mediterranean cruises and other routes. Her service was marked by a collision with the Lurigethan in 1932, which she was partly responsible for. She transitioned to cruise service and laid up in Liverpool from 1935, after which she was temporarily returned to service for troop transport and other duties, including participation in the 1937 Coronation Naval Review. Requisitioned by the Royal Navy in 1939, she was converted into an armed merchant cruiser (HMS Laurentic, pennant F51), armed with 6-inch and 3-inch guns and depth charges. Her maritime career ended when she was torpedoed and sunk by U-99 off Ireland on 4 November 1940 during a rescue mission, resulting in the loss of 49 crew members. She holds significance as the last White Star Line steamship to be built and the last of her company’s ships to be sunk, marking the end of an era in maritime history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.