The Mystery of the Lost Submarine

It's the year 1940 and the world is engulfed in a war atmosphere. Like most young people, you were called to serve in the military. With your skill, you made it into the naval unit. You have become the captain of the submarine IRIS 1548 and, together with your unit, you embarked on a common, almost routine, voyage to scan the seabed. However, during your journey, there was an electrical short circuit. You cannot connect with the base and you have no idea where you are because the navigation system was also damaged during the short circuit. Your task is thus to try to repair the electronics and get you safely back to the base. However, you don't have much time because you have spent too much time under the sea and enemy submarines are dangerously approaching…