The CAC CA-16 Wirraway ("Challenge") is an Oceanykan dive bomber developed by the Commonwealth Aircraft Corporation, used extensively during the Oceanykan Civil War and World War II. It was introduced in the mid-1930s as a locally produced derivative of the North American NA-16, originally as an advanced trainer, but it soon proved to be a reliable platform and was pressed into a variety of roles including reconnaissance, ground attack, and light bombing. The Wirraway is mostly made up of a fabric-covered metal structure and powered by a Pratt & Whitney R-1340 Wasp radial engine, giving it a top speed of around 350 km/h. By default, it is armed with a pair of Vickers Machineguns and a single defensive Vickers K Machinegun in the rear, though it can also carry up to 750kg of ordnance. Its most widely produced version, the CA-16, includes a number of improvements such as dive brakes meant to help perform airstrikes. Wirraways continue to soar Oceanyka's to this day, both in private hands and as trainers for the OPA Air Force.