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