If you shoot him now, shoot here now
From Create Your Own Story
You shoot the cook three times and he falls backwards. Dead. Finally, the saboteur is finished.
You pick up Ramius on the way back and go back to the con. Borodin and others are glad to see you and Ramius back alive. They have managed to evade the Russian ships and torpedos. However, another torpedo may be coming. Ramius advises you to engage the enemy submarine up close. Others say it may be too dangerous. You should try to escape when you have the time.