This movie has it all: Stupid script, terrible acting and so filled with clichés that you don't believe it. The dialog is so predictable and stupid, that - at first - you think the movie is a comedy. Sadly, it is not...
One example of the bad script: The climax of the movie. After hours of struggling with the sub - the crew almost suffocating in the rear end of the sub - finally our hero and heroine (on the bridge) manage to break through the ice to the surface. They open the hatchet, and gasp for air, then apparently they spend some time chatting and laughing. Surprisingly they couldn't care less about the crew still trapped inside the sub without air. The producer must have thought "Oooh... nice shot of the hero and heroine, let's add a little romantic mood here. Never mind the script is totally crap and full of holes"
One example of the bad script: The climax of the movie. After hours of struggling with the sub - the crew almost suffocating in the rear end of the sub - finally our hero and heroine (on the bridge) manage to break through the ice to the surface. They open the hatchet, and gasp for air, then apparently they spend some time chatting and laughing. Surprisingly they couldn't care less about the crew still trapped inside the sub without air. The producer must have thought "Oooh... nice shot of the hero and heroine, let's add a little romantic mood here. Never mind the script is totally crap and full of holes"