Greyhound

Last night we watched a movie titled “Greyhound” starring Tom Hanks. This is a story of the US Destroyer USS Keeling that was performing escort duty of a convoy heading from the US to Great Britain during WW2.

The book is based on a CS Forester book titled “The Good Shepherd”. Actually, the title has been renamed to “Greyhound” to coincide with the movie release.

CS Forester has written many books about naval warfare. He probably best known for his books on Horatio Hornblower during the Napoleonic wars. He also wrote the book “The African Queen” that was the basis for the movie made in 1951 starring Humphrey Bogart and Katherine Hepburn.

So I learned a new word. “Pillenwerfer” is the name the Germans used for a device used by the U-Boats during WW2 as a decoy to US Navy Sonar. From Wikipedia:

It was launched by an ejector system colloquially referred to as Pillenwerfer (English: “pill thrower”). When mixed with seawater, the calcium hydride produced large quantities of hydrogen which bubbled out of the container, creating a false sonar target.

So I managed to read the book before the movie came out. It tells the story of action on a US destroyer escorting about 60 ships to England during WW2. It was a quick read. I read it under a week. Lots of action chasing all of those nasty U-Boats. Reading the book beforehand made it easier to understand all of the action.

Back to the movie. I kept wondering, “How’d they do that?”. You know that they didn’t film an entire convoy crossing the North Atlantic in heavy seas. The CGI artists did a masterful job of making the film.

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