No more than five minutes later, the U-boat goes away.

She was the only U-boat to be lost in the attack.

Whether they found a U-boat or not was never determined.

However, there had been no contact with the U-boat for several days.

A U-boat is much more valuable than the lives of three men.

Randy wants to go down and look at the U-boat in person.

He was thinking, five minutes to destroy the third U-boat.

The U-boat spent most of her career as a training vessel.

He was also allowed to choose his own officers from the U-boat school.

They were staring into the control room, the U-boat's heart.

The marked area seemed very small compared with the size of the U-boat.

Also forget any nonsense about your career in the U-boat.

By and large the pilots were in the same situation as the U-boat arm.

It sank after an attack from the U-boat stopped her.

Staff officers and other U-boat commanders sat at a long table.

I'd heard of U-boat commanders doing it during the war.

There was an explosion in the direction of the U-boat, and the light went out.

That time though, the U-boat failed to make good her escape.

The U-boat was then able to gingerly continue on its way.

His orders were to photograph and describe the U-boat in action.

U-78 spent the majority of her career as a training U-boat, during which time she had several different crews.

U-boat searches were extended to over an hour at a time.

In five years of training he only spent one week studying U-boat warfare.

Your torpedoes take up most of the space on a U-boat.

This class of U-boat did not carry a deck gun.