Less a plot-driven novel than a closely observed portrait, Porter's famous novel deftly exploits the author's ability to focus on the telling details of personality--and the result is a sometimes funny, often touching, and ultimately stinging examination of the insularity, hypocrisies, and pretensions of shipboard passengers en route from Mexico to Germany on the eve of World War II.
Porter's cast of characters are primarily German, but a handful of Spanish, Mexican, Swiss, and American characters give the novel an international perspective. Whatever their individual backgrounds, the characters tend to adopt reactionary postures toward and make assumptions about their fellow travelers based on both class and nationality; consequently, they tend to regard each other in a stereotypical light--but even as they fail to understand the truths behind the stereotypes, Porter highlights their lack of comprehension in a frequently comic but extremely disconcerting manner, thus demonstrating that her characters are at sea in more ways than one.
There is obviously a certain symbolism to the novel, but Porter does not belabor it, and we are free to decide if we wish to read for pure pleasure or for deeper meanings. Fortunately, there is an abundance of both. Still, this not a novel to read quickly or casually. It requires time to develop clearly in the mind, so readers are advised to approach it with ample time in which to enjoy this superior work.