Deep sea bases (German "Tiefseebasis") are giant cities located under water.

The southern arnny and sea marine bases are furnishing most of the loyal troops.

We'll evacuate the professor to the sea base immediately.

In preparation for tomorrow's evacuation of the sea base, both subs were being dry-docked and examined.

They were dependent on the sea base calling there.

Jack remained silent, playing dead, "I have your woman trapped at the sea base, and your ship impounded.

David tapped in a code on his computer, preparing to patch through to the sea base.

The pillar lay twenty yards to his right, the sea base straight ahead, its three doughnut-shaped sections lit up brightly.

The Nautilus is still outside the sea base.

When she did, each porthole shone with such brilliance that it seemed the sun itself had descended atop the sea base.