As the outer doors were opened, she became heavy forward, and depth control was lost.

There was considerable damage, including temporary loss of depth control.

Since submerging and depth control became difficult, she turned back for Dutch Harbor.

S-36 ran at one-third speed, her depth control and trim poor.

At about 06:30, almost an hour and a half after the initial contact, she lost depth control.

As the submarine dove she lost depth control and her port shaft stopped turning.

This boat uses bow planes up forward for better depth control.

The precise depth control and ability to treat large areas in a relatively short amount of time makes these lasers valuable tools.

The four submarines were moving only fast enough for depth control.

A fight for depth control, however, precluded an attack.