Sunday evening I watched part of Plymouth Adventure (1952). I'd seen it before, so I didn't watch the entire film.
It's kind of an odd picture. Rather than being based directly on history, it's based on a novel about the voyage of the Pilgrims on the Mayflower (which, no doubt, is why TCM chose to air it Sunday evening).
The plot revolves around a love affair between Christopher Jones, the master (captain) of the Mayflower, and Dorothy Bradford, wife of William Bradford. Captain Jones is played by Spencer Tracey, who doesn't do badly as a gruff, cranky, middle-aged sea captain. Gene Tierney is Mrs. Bradford, the leading lady, and I agree with a reviewer at IMDb who wrote that Tracey and Tierney had absolutely no chemistry. I guess they needed a "name" for a leading lady.
Van Johnson as John Alden was just ... weird. (In the movie Alden is called a carpenter, probably because people know what a carpenter does, but not so much what a cooper [barrel maker] does, and that's what Alden was, a cooper.) Lloyd Bridges was Robert Coppin, the First Mate of the Mayflower.
Since it's a matter of historical fact, I won't consider it a spoiler to say that once the Mayflower arrived in New England, Dorothy Bradford drowned. Some writers have wanted to speculate that her death was an accident and not suicide, but, c'mon, really? She went overboard while the Mayflower was riding peacefully at anchor in the shelter of what is now Provincetown Harbor. The movie makes her death a suicide, but Tierney and Tracey have so little chemistry that the first time I saw this film I didn't realize the suicide was supposed to be because she was caught between duty to her husband and love for Captain Jones. I just thought she did it because the captain lusted after her (she was a Puritan, after all).
Weird coincidence: Tierney suffered from mental illness and at least once really did nearly commit suicide.
The film won the Oscar for Special Effects, the storms at sea, and I think the effects are still pretty impressive, considering this was decades before CGI, back when Hollywood really could do magic. After the storms, I think the best thing about this movie is the Mayflower herself. The ship is pretty accurate, and the scenes of her setting sail are also pretty impressive.