sentences:  The day before Jones is to conduct a test dive, news arrives that the "Kiang Ching" has sailed.Despite Jones's protests that the submarine's torpedo tubes have not been inspected and tested yet, and they are therefore too dangerous to use, there is no choice but to leave port and pursue the freighter.When Montel boards with his assistant, the scientist Professor Denise Gerard (Bella Darvi), the superstitious crewmen are upset, believing that a women on board is bad luck, but Montel insists that she come along.