The U-boat submarined the freighter during the night.

During the early 20th century, submarinism altered naval strategy and provoked intense debate about the rules of engagement.

Scientists mapped a submarine river that carved channels across the continental shelf.

At the picnic, Maria ordered a turkey submarine sandwich and shared it with her friends.

Scientists studying deep-sea currents recently discovered several submarine rivers carving channels across the ocean floor.

Sediment cores from the submarine fan revealed rapid alternating layers of silt and sand.

Small companies can be devastated when they are hit by a submarine patent that surfaces decades after the original filing.

The veteran reliever revived his career by mastering the submarine pitch, baffling hitters with its low release and unusual movement.

For the road trip, we packed several submarine sandwiches, chips, and a cooler of drinks.

During the storm, the submarine chasers patrolled the narrow channel to protect the convoy.