They are the quietest submarines in the fleet and the most reliable.

The chances of the Saudis picking up a very quiet nuclear submarine, running several miles offshore, are zero.

Extremely quiet submarines tended to detect one another at very short range.

Some missions may pit the player against the very quiet Kilo-class diesel-electric submarine.

Unseen was a very quiet, possibly hostile submarine, and she could be within 10 miles of him.

Besides, it was better than two quiet submarines running into each other.

We must regain our military edge (the quietest submarines in the world today are operated by the Russians).

I'll send the Seawolf, the quietest, most stealthy submarine there is.

The result was the quietest submarine of her era, and for many years to follow.

The Russians, using the new propellers, can now make quieter submarines.