Guest Stars Ralph Ineson as Steward Hart Diana Kent as Eleanor Widener Miles Richardson as John Jacob Astor IV Simon Paisley Day as Sir Cosmo Duff-Gordon Olivia Darnley as Bessie Allison Larina Mészáros as Loraine Allison Péter Kõszegi as George Widener Angéla Eke as Madeleine Astor Cian Barry as Fourth Officer Boxhall Lloyd Hutchinson as Chief Steward Lattimer Ifan Meredith as Fifth Officer Lowe Georgia McCutcheon as Theresa Maloney Jonathan Howard as Sixth Officer James Moody Ben Bishop as Stoker Lyons Gráinne Keenan as Laura Francatelli Tom Andrews as Seaman Hawkins Joseph May as Giglio Sally Bankes as Mrs. Gibson Sophie Rundle as Roberta Maioni Will Keen as Chief Officer Wilde Christine Kavanagh as Marian Thayer Joséphine De La Baume as Madame Aubart Ryan Hawley as Jack Thayer Attila Bardóczy as Gatti's Waiter Pandora Colin as Countess of Rothes Laurie Hagen as Emma Sagesser Thomas Aldridge as Steward Taylor Istvan Koncz as Gatti's Waiter Luke Norris as Seaman Holmes Margaréta Szabó as Woman 2 in Lifeboat Richard Southgate as Youth with Jack Lili Horvath as Woman 1 in Lifeboat Dave Legeno as Seaman Davis
