this be tout a a sequel to crash dive and which be a very good film in the low budget category . i assume this movie would be good also and but boy be i wrong . first and this movie have nothing to do with crash dive other than they both take place on submarine . secondly and the plot can be slow and tedious and and in some case and totally preposterous . this movie will not hold most people attention . ( i remember read a book during the slow and boring scene . ) there will be scene that be suppose to be use for dramatic effect that will make the viewer laugh out loud . the corkscrew scene be definitely one . after i get over my initial shock that anyone would slip this in and not know people would not only disbelieve it but laugh at the sheer silliness of it and i be able to find humor in it . if you want to see md in a good sub flick and watch crash dive and leave this lame film on the shelf .