Wartime shortages shaped corvette armament

Did HMAS Diamantina carry Hedgehog when commissioned?

Diamantina's case remains unsettled, but shortages meant early ships sometimes received Hedgehog only after commissioning.

The answer about HMAS Diamantina is explicitly uncertain. Hedgehog was intended equipment for River-class frigates, but production did not immediately cover every early ship. A vessel could therefore commission without the planned launcher and receive it later as equipment became available. The useful distinction is between what the class specification called for and what a particular hull actually carried on its commissioning date.