I think that must be the "Thomas Andrews" scene, or at least a scene which came shortly after it. I don't think, when A Night to Remember was released, that anyone would have imagined the ship breaking up, and indeed, in the 1950s, most maritime experts would simply have laughed at the idea.
When A Night to Remember was made, there were plenty of people around who had first-hand experience of steamships sinking in the North Atlantic — probably even some of the actors in the film (did Kenneth More ever witness the loss of a ship during his World War II naval service?) I am sure that the sinking, as depicted in the film, was as realistic as it could possibly have been, based on the evidence available at that time. In any case, Lawrence Beesley, who was “a special advisor” during the making of the film, was quite adamant that the Titanic did not break-up on the surface. Beesley, a physicist, who would have known what he was talking about, said that:
“As we gazed awe-struck, she tilted slowly up, revolving apparently about a centre of gravity just astern of amidships, until she attained a vertically upright position, and there she remained — motionless …. No phenomenon like that pictured in some American and English newspapers occurred - that of the ship breaking in two, and the two ends being raised above the surface. I saw these drawings in preparation on board the
Carpathia and said at the time that they bore no resemblance to what actually happened”.
Beesley did, however, refer to the appalling noises which came from within the ship, which he attributed to the boilers and “machinery coming loose from their bolts and bearings and falling through the compartments, smashing everything in their way”. Based on Beesley’s first-hand evidence, the film-makers would clearly have imagined fearful scenes of destruction as bulkheads were smashed down by boilers and other loose fittings. In 1959, they would not have wanted to show such destruction on cinema screens, in part because it would have brought back too many memories of recent losses at sea. The impending destruction was therefore merely suggested - and this is surely what was by the splintering columns depicted in the film?