Watch it for the SFX

The first two hours are junk - cod oirish accents, poor but noble cliches abound, an upper class young woman running about the ship chasing men and having extra marital sex. Really, this would have been as unacceptable in those days as walking naked down the street is today (women were still sent to mental asylums for getting pregnant outside marriage until the 50s) The film gets interesting when the ship starts to sink. But I wouldn't watch it twice.