Wow! Such a good movie.

If you don't like this, we can't be friends.

The performances transcend the film's tropes, grounding it in characters that feel more complete than this subgenre often produces.

The story, direction, characters, and writing/dialogue is akin to taking a tranquilizer shot to the neck, but everything else was so well done.

Made during the pre-Ealing comedy era, when the studio was turning out a slew of propagandist dramas with a documentary feel (others included WENT THE DAY WELL? (1942), and THE FOREMAN WENT TO France (also 1942)), SAN DEMETRIO London tells the story of a British merchant ship blown up in 1940. The crew spend some time marooned in a life-boat, but eventually return to the stricken ship and manage to patrol it back to safety in the United Kingdom.Co-directed by Charles Frend and Robert Hamer, the film has its roots in documentary, ranging from the use of stock footage to the way in which it examines the lives of ordinary sailors coping with extraordinary situations. The plight of Greaser John Boyle (Mervyn Johns) is sensitively handled, as he quite literally works himself to death and passes away at sea, dreaming of the nylon stockings he has bought for his wife as a present. He is given a funeral with full naval honors. Likewise Messboy John Jamieson's (Gordon Jackson's) transition from callow youth into mature deckhand is cleverly depicted, as some of his suggestions - initially dismissed as impractical by Chief Engineer Pollard (Walter Fitzgerald) turn out to be inspired, helping the crew survive their ordeal.The film as a whole extols the value of community, of human beings setting aside their regional and national differences and learning how to pull together in times of extreme stress. "Yank" Preston (played by the Canadian Robert Beatty), an American passing for a Canadian, begins the film as something of a rebel, preferring the bottle to the responsibility of hard work, but soon proves to be an invaluable member of the crew. It is he who provides the Bible so that Boyle can be given an appropriate send-off to the other world. Even though the bombing of British cities had largely ceased by 1943 - the time of the film's release - it was important that people on the Home Front bonded together to aid the war effort, and SAN DEMETRIO London fulfilled an important purpose in communicating this message.As befits a studio relying mostly on performances and directorial cunning rather than elaborate special effects, the film concentrates on characterization rather than incident. Some of the action sequences might seem a little rudimentary now - especially with the use of back-projections - but we have to remember that the film was produced under difficult conditions with a limited budget. Directors Frend and Hamer make skillful use of such constraints to produce a film that is at once surprisingly touching as well as stirring in its impact.

Just for the record, "San Demetrio London" is not a religious movie, and it has nothing whatever to do with any sort of sacred personages. In fact the characters depicted in this movie are quite the antithesis. "San Demetrio" was the name of a ship, a British commercial tanker operated by the Eagle Tanker Company, that was sailing during World War II. The incredible story recounted in the film is true, and the jaw-dropping ordeal endured by the members of the crew took place exactly as depicted. Without giving the story away, suffice it to say that, had these men been members of the military rather than mere civilian merchant seaman, it is very likely that every one of them would have been awarded the Victoria Cross. I had heard of this movie for many years but only recently finally got the opportunity to actually view it. It is an extremely dramatic story told in a very simple and straightforward manner. That is as it should be, because the story itself is so dramatic that no embellishment is necessary, and would probably only diminish the impact of the story.It is acknowledge that some of the special effects are less than first-quality by today's standards. However, allowances must be made for the fact that this film was produced in Britain in 1943, and there was a war on. That being said, the depiction of the tanker itself, and the details of the manner in which it was operated, are extremely accurate. I've sailed on several elderly merchant ships that had been built during WW-II, including an old T2 tanker, and I can vouch for the movie's authenticity. This is not altogether surprising when one considers that "San Demetrio London" was directed by the same man who later made "The Cruel Sea". Highly recommended as a depiction of WW- II at sea.

This wartime propaganda film is pretty good in that it focuses on the strengths and determination of the British marine rather than relying on stereotypical portrayals of the enemy to stir up patriotic fervour. What we have here is a display of stiff-upper-lippery right through the ranks, from the plum-voiced officers down to the cor-blimey cockney galley slaves.The story is a true one: a hardy band of survivors from a tanker under fire from German guns spend two days in a cramped lifeboat before finally sighting a ship only to find that it is the tanker from which they fled, somehow miraculously afloat and, with a little TLC, capable of transporting the crew back to land. I'm not quite sure why they spent two days rowing doggedly – admittedly they had to distance themselves form the flaming tanker and its cargo of oil, but surely it would have made more sense to remain reasonably close to where they had been as that would have been – and was –where the search for them would have begun.There are a number of situations and obstacles the resourceful sailors have to cope with and, for the most part, they meet each one with jut-jawed resolution. Mervyn Johns, the little man with the loving wife at home encapsulates the spirit of the bulldog breed, battling on even with a tummy ache. His officer wonders out loud at Johns' endurance, prompting the remark from another officer that is something along the lines of 'you can never tell a person's reserves of strength until they're up against it' – a rallying call to the British audience – fighting alone with no major allies at the time – and a warning to their enemies. There's an Irishman amongst the crew, a Scot and a Taff. There's even a Yank, a sop to the US box office, and probably a deliberate attempt to get the film seen as widely as possible in the States to drum up pro-British sentiment.The film is entertaining enough and you find yourself rooting for the disparate group, even though each is only given the briefest of character sketches before settling comfortably into pre-defined roles designed to appeal to as broad a spectrum of the population as possible, but it lacks any real emotion or depth.

San Demetrio, London gives an interesting account of a British Oil Tanker which was attacked and abandoned by her crew, only to find the ship stayed afloat. Good performances and an interesting perspective, as the film was released during WW2.