Your flight leader has a sixth sense about where in the Marianas enemy U-Boats have surfaced. If you follow his lead and stay close, he will lead you to Das Boot.
When you find a U-boat, they will only stay surfaced long enough to haul in their dirty laundry before diving away. Eventually even the slowest U-boat crew will rig the ship to dive. If the U-boat dives away before you can sink it, the flight leader is really good at finding another one.
The mission includes all the current ...