| Cast overview, first billed only: | |||
| Gene Hackman | ... | ||
| Ernest Borgnine | ... | ||
| Red Buttons | ... | ||
| Carol Lynley | ... | ||
| Roddy McDowall | ... | ||
| Stella Stevens | ... | ||
| Shelley Winters | ... | ||
| Jack Albertson | ... | ||
| Pamela Sue Martin | ... | ||
| Arthur O'Connell | ... | ||
| Eric Shea | ... | ||
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Fred Sadoff | ... | |
| Sheila Allen | ... |
Nurse
(as Sheila Mathews)
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Jan Arvan | ... | |
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Byron Webster | ... | |
A passenger ship, on her way to the scrap yard is pushed to her limits by the new owners to save on the dismantling fees. A tidal wave hits her, flipping her over so that all the internal rooms are upside down. A priest takes a mixed band of survivors on a journey through the bowels of the ship in an attempt to survive. Written by John Vogel <jlvogel@comcast.net>
The aging liner Poseidon, on her final journey, is struck by a tidal wave that knocks her upside down. A small group of passengers realise that if they want to survive they must journey up into the bowels of the ship hoping for rescue from above.
The idea is well conceived and the excellent cast turn in good performances despite getting little help from the somewhat corny script. With above average special effects for the time and excellent sets that convincingly realise the upside down half-flooded ship and its bewildering maze of passageways, the movie manages to be compelling and exciting viewing.