The older 25-caliber five-inch guns were replaced at the same time by eight more dual-purpose guns in single mounts.

Increasingly through the 1920s and 1930s the secondary guns were seen as a major part of the anti-aircraft battery, with high-angle, dual-purpose guns increasingly adopted.

There'll be dual-purpose antiaircraft guns arriving aboard the Roamer this afternoon.

They have to be because of my second worry-Worth has eight dual-purpose antiaircraft guns bolted to the platform.

Many later ships used dual-purpose guns to combine the secondary battery and the heavier guns of the tertiary batteries, in order to simplify the design.

There, she also received her main battery, a single 5-inch, dual-purpose gun.

The radar could detect any hostile approach from air or sea, and the dual-purpose antiaircraft guns, aboard and installed, could take care of those.

Like the Atlanta class, the Oakland class was designed as an anti-aircraft cruiser, with a main battery of dual-purpose guns.

The gun was adapted for land use as a dual-purpose gun.

New construction was undertaken to create cruisers of similar speed and displacement with dual-purpose guns.