A little flat but, yes, probably more accurate than Titanic. This is based on the book by Walter Lord, and directed by Roy Ward Baker, six years after The Snows of Kilimanjaro.
This is in a "Great Cinema" collection, where everything seems to be based on literature, in this case on a Hemingway short story, and I am not a Hemingway fan. Henry King co-directed with an uncredited Roy Ward Baker.