In the opening scene on the ship (which we later learn is the LUSITANIA), the bridge crewmen are wearing the old-style flat caps labeled "White Star Line". It was the ill-fated TITANIC which was owned by the White Star Line; LUSITANIA was owned by the Cunard Steamship Line.
In the credits, Andrea Doria is misspelled as "Andrea Dorea".
The survivor tells the doctor that the Lusitania will be sunk off the "Old Head of Kinsdale." However, the proper name of the headland, which is located in County Cork, Ireland, is the Old Head of Kinsale.
Though both the scenes in India and England are supposed to be happening in the year 1907, In "The Doll", The Colonel refers to her Majesty, and a portrait of Queen Victoria is on the wall, though she died six years earlier, and King Edward VII would be reigning monarch.