flattop [Coll.]; helicopter carrier; missile platform, missile boat; ironclad, turret ship, ram, monitor, floating battery; first- rate, frigate, sloop of war, corvette, gunboat, bomb vessel; flagship, guard ship, cruiser; armored cruiser, protected cruiser; privateer.

Her propellers had been shut off; all the power of her remaining engines had now been clutched into the helicopter-drive.

The ace inspected the vacuum-gauges, the helicopter tachometers, and shrugged his shoulders.

There were machines of dozens of other types, monoplanes, bi-planes, machines of the helicopter type, and a few devices based on the parachute principle.