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