Patrick Macnee's character refers to the Titanic as 'RMS Titanic', which is the correct designation. He then states that RMS stands for 'His Royal Majesty's Ship'. RMS, however, stands for Royal Mail Ship.
Eric Farley said their cabin, stateroom 111B, was right next door to Mr. and Mrs. John Jacob Astor. This is incorrect. The Astors' cabin was C-64 and C-62. They would have been on different levels.
Patrick MacNee mentions a "rowboat". An English person, even today, would never say that. They'd say "rowing boat".